Thunder Torque Inserts 258 for Increased HP & Torque
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Small cost. Big difference. 0 people found this helpfulOne of the things I appreciate most about DK custom products is that they’re not banging you over the head with the price. The customer service was phenomenal, cause I had a whole bunch of questions and they made my life real easy. The biggest difference was the response in the lower end torque. I thought taking out the catalytic converter would be a game changer, but I actually felt like I lost power. ????????
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2020Road Gilde limited 114 Vance & Hines Torquer450’s 1 people found this helpfulNoticed a loss of low end power with the slip-ons. I removed the baffels, installed the TTI’s on the end of the baffels and re-installed the baffels. Instantly noticed restored low end power! Product works as advertised!!
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Thunder Torque 258 inserts 0 people found this helpfulBest decision I have made for my bike the raw sound and the power it gave my 103 tri glide was money well spent
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installed xied's and 2 5/8 thunder torque in modified 4" factory muffler 0 people found this helpfulinstalls on both products was easy and was a great improvement of sound and off idle to 4000 rpm was excellant
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Great product 2 people found this helpfulI installed the 258’s in a set of 3” pipes with 2 1/2” baffles in them. I never did have a lot of cackling on decel or popping but I had a very lazy throttle response. Like in traffic at a light just do a quick throttle blip and the bike would just stumble. I put these in started the bike let it idle and now when I blip the throttle it cracks and has way better response.
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BETTER TONE+SOUND 1 people found this helpfulMY 2016 TRIGLIDE CAME WITH STRAIGHT PIPES WHEN I BOUGHT IT. GOING UP HILLS AND DOWN SHIFTING IT WAS REALLY LOUD AND SOUNDED LIKE I HAD FIRECRACKERS GOING OFF IN PIPES. THUNDER TOURQUE CHANGED ALL OF THAT, A NICE MELLOW TONE NOW. ABOUT HP I DONT KNOW YET AS LIVE IN N. MAINE AND TO COLD TO RIDE NOW.
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Why can’t every product be this awesome? 3 people found this helpfulAwesome is an understatement! I was undecided on who I was going to spend $500+ on for slip on mufflers for my 2016 HD Freewheeler. Not that I was excited to spend that much money anyway…… The I came across a video for the DK Custom’s Thunder Torque inserts. To be honest, I was extremely skeptical, because of the low price and the ease at which the video showed the installation; but I ordered a set of the 258’s. They arrived three days after placing my order, in fact too early for me to do anything! I had to wait for my days off from work to install them. LOL. The video said something like “30 minutes to install” and damn if they weren’t spot on!! 30 minutes start to finish. Drilling out my stock baffles, removing the baffles and fiberglass filler, grinding down the sharp edge left inside my exhaust from the removal of the stock baffles and drilling two small holes to mount the new Thunder Torques. The included, printed instructions were perfect AND now I have the exact exhaust sound I was searching for, for less that $80. I’m stoked!! I HIGHLY RECOMMEND THIS PRODUCT!!
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Thunder Torque Inserts 0 people found this helpfulI installed the TTI's 258 in a set of 4" Sharkroad Silp-ons with the baffles removed and the sound was greatly improved. I could feel the torque right away, throttle response is better and my 2023 Tri-Glide has much more pep when up shifting. Thanks DK Custom for giving me more bang for the buck.
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Just buy them 1 people found this helpfulHighly recommend these, the videos don’t do these justice, easy exhaust upgrade. After watching several different videos of several different bikes I finally picked up a set, 2002 Road King Classic with full Screaming Eagle exhaust No baffles , stop second guessing and grab some you won’t be sorry
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Installed on Sharkroad 2 into 1s 1 people found this helpfulInstalled in my new Sharkroad 2 into 1s. I had to drill the 3/8ths" hole thru the side and there really isn't much room around the 2 5/8" TTI but the sound is great! I did not listen to the exhaust without the TTI as the muffler looked like there was no core and I assumed too loud for me. The SR exhaust is slightly quieter than the Vance&Hines dual slipons it replaced.
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TTI 0 people found this helpfulRode Saturday and Sunday without,lost low-end power, received TTI and installed,made a world of a different,better response & power back
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TTI 2-5/8 2 people found this helpfulI put these on a 2024 m8 114 street bob. Quality is good well made. Good welds( professional welder here). So I cut out the baffles on my stock exhaust. Ran the bike for approx a week like that while I waited for the tti to come in. I did notice a lack of low end torgue during that time. I put the tti in. Sound was different a little more quite from straight pipe. ( not much had to use decibel reader to notice) I did get back low end torgue. From just riding it I would say not as much as the stock but better then straight piped. Draw backs instructions say 1"-2" from the end. Would be nice if they clarified if this was from the front on the tti or from the bolt of the tti. As there is approx 1/2inch difference there. ( sorry nuke plant experience picky on those little details lol). Ups lost my first order DK customs was fantastic to deal with on this issue. They responded to my email with in a hour or so and had another set shipped with in like 3days . I would say worth the money and I will be buying more product from them
Response from store
I am sorry that UPS lost your package! I am glad that Customer Service was able to help quickly to get your parts re-shipped out to you.
The closer to the exit of the exhaust the better the TTI works. Having the right size TTI is also important for getting the most performance out of your exhaust. If you feel that it is not better please feel free to contact our Customer Service again and allow them to trouble shoot with you to get the most out of your TTI's. [email protected].
Thank you for your business and for your review! MB -
Fantastic sound! 0 people found this helpfulI added TTIs to my stock exhaust after removing baffles and packing. Sounds fantastic!
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Success!!!!! 0 people found this helpfulThey work as advertised……. I am extremely happy…..
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They work 0 people found this helpfulSounds better and feel a little more in the seat. Thx DK
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Thunder torque 258 1 people found this helpfulInstalled on a two into one with no baffle and it works . Hardly any popping sounds great torque is awesome
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Torque plates 1 people found this helpfulThey work great lots of sound and super easy to install
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Get The Inserts They Do Work!! 2 people found this helpfulSo, I just picked up a 2024 Road Glide 3 but this time instead of going out and buying a slip-on set of pipes I decided to remove the baffles and stuffing on the existing pipes. First, after removing all the baffling I ran the Trike without the thunder torque inserts and I did notice a slight decrease in both low and mid range torque according to the butt dyno. I then installed the Thunder Torque Inserts and I noticed an immediate difference. So those who are out there who do not believe reversion doesn't exist well it does and by putting these little puppies in will make the sound deeper and you will get a performance increase. I highly recommend this product if you are running open pipes.
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TTI 0 people found this helpfulI installed 258 TTI’s in my 2021 street glide special, in my factory mufflers (with baffles and stuffing pulled out). Cat still in for now. Sounds similar at idle, has nice tone at higher RPM’s. I’ll post a video when I have time
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TTI 258 with Vance & Hines 2 in 1 Big Radius! 1 people found this helpfulBRAH!!!! Zero dead spot! Biggest Bang for your buck!!! Super easy install! Incredible! NUFF SED! ???????? Totally Recommend this product!!!
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TTI 258 in Vance & Hines Big radius 2 in 1 1 people found this helpfulBRAH!!!!! ???????????????????????????????????????? NUFF SED!!!!!
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TTI 258 1 people found this helpfulJust installed on my 19 triglide. Have nieghbor haters slipons decatted head pipe. Didn't think torque was that big a loss...Wrong. pulled baffles mounted these in center of bell....greatest sound yet...torque returned....great add on..plus sounds different than rest of the guys I run with...Thanks Guys...keep up great work D.C..
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2023 Road Glide ST 0 people found this helpfulCut out the stock baffles and installed the TTIs. Sounds great. Easy to install.
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Home Run 1 people found this helpfulTook me a while but finally got installed. Thanks for DK answering my questions! Knocked down the exhaust volume a bit which is a good thing. I wasn’t ready for the low-end torque gains! She jumps when I throttle her up now! Amazing results for little money. Thanks again Dwayne! Ride Safe - Ride Free
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I like them 0 people found this helpfulPrior to the TTI's if we were in 6th at 3000 rpm the trike could maintain speed but to accelerate would cause the engine to lug. Once the TTI's were installed it seems much happier at the same gear and engine speed. That's not a lot but for a few dollars the bike performs a little bit better. Also, we can run standard mufflers (with the guts removed) and not have to buy upgrade slip ons.
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great sound 0 people found this helpfullove these TTI's they sound great and were easy to install on my 23 breakout
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A Little More Umph! 0 people found this helpfulHave a 2005 EG Classic with an S&S top end, Screamin' Eagle bottom end, Rush head pipes and and true dual mufflers, with the baffles. Installed the TTI-258's. Not much sound change but, a little more torque, no matter the gear or speed. Comes in handy when we ride two up.
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TTI's 0 people found this helpfulAnother great product from DK customs. Love the sound and there is more low end torque.
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Ironhead / dragpipe stumble 0 people found this helpfulBought the 118s when my cheap ass ultima drag pipes showed up, they were 2 inch instead of the 1 3/4, install was easy...in fact it's the easiest thing any ironhead owner will do, the sound.....oh sweet music , I don't know what else to say, there's nothing on the planet that sounds like an ironhead with drag pipes...nothing. the inserts gave mine a nice deep mean rumble , the sound is amazing period. At steady partial throttle before the inserts it had the typical carburetor/ drag pipes stumble , with the inserts it's gone now ( I'm only speaking for my scoot ) love em and will recommend them.
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Easy to install, Great performance 0 people found this helpfulI wanted to go to a 2into1 system on my custom FLRT trike to eliminate all the exhaust piping and get a better sound. I replaced power duals with a custom short 2 into 1 system with a straight through baffle. I placed a 158 Insert at the end of the baffle which was about 1 1/2" from the end of the pipe. You can really hear the Woods cams now, and right off the bat the performance was equal to the power duals. After a couple of auto-tune sessions, it is even more impressive. Sounds great, and out-performs the duals. Two thumbs up!
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Great value 0 people found this helpfulA very reasonable way to improve power and sound
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Fit was perfect 0 people found this helpfulFelt the power and great sound on take off Big difference thanks to this product I recommend these for anyone who wants more raw power
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Best bang for buck 0 people found this helpfulCompletely changed the bike. My 1200 roadster had screaming eagles. Had some previous work but completely brought the life out of the bike. Pulls all the way to 5500 no problem
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Perfect part for the job 1 people found this helpfulLike others have said its simple amazing how well these inserts work for sound and extra power. I found that deep sound I had been looking for and thanks to DK custom i found it..!!! 2018 Tri Glide with Screaming eagle pipes, sounds totally different now and i love them.. THANKS
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258 inserts 0 people found this helpfulThis item works perfectly! It lowered my tone enough to make it pleasant while riding. And when I called to order, the person that helped was very friendly and knowledgeable.
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These are amazing! 0 people found this helpfulI have a 2008 Night Train and bought it with the baffles already removed. It sounded MEAN but just a bit high pitched and violent for me. I gave these a shot and WOW! What a difference in sound! It lost all the high pitch sound and is much deeper and the bit of boost in power is also nice! The power just feels smoother in the power band. Get them!!
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2010 Sportster 48 0 people found this helpfulMy Sportster 48 had no baffles on stock slipons.Always sounded poppy and bike not very fast. After installing the Thunder torque and adjusting them to my preferred tone I noticed a BIG difference in bttm and mid range power.All of the popping noise pretty much went away. I was sceptical but after watching all the vids with dyno charts I figured for the price I'd give it a shot...I'm dammed happy I did.My next purchase will be a stage 1air filter kit and after watching your vids on the differences between manufacturers I am most certainly going with the DK brand.Im looking forward to more power after the 2 components combined. Thx a million DK for all your testing manufacturing and all your vids showing the results...I am a fan a customer and a true believer for all you do for us biker brothers and sisters.Thx again... Ride Safe everyone... Chip in Ga.
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Always awesome products 0 people found this helpfulI love dk custom these helped when I changed my head pipe and took out cat sounds awesome with 472 fueling cam. I’ve bought almost everything they make for my cvo tri glide. Great company products are top notch and there customer support goes above and beyond
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Great Product! TTI-258 1 people found this helpfulSounds alot better. Removed baffle and lost some low end. Installed the 258 and got the low end torque back. Thanks for making super great (cherry bomb)
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TTI’s on RG 0 people found this helpfulLate this winter I got to thinking what I could do to my bike to gain a bit if torque and come on a bit sooner . I run tru dual Magna flo hitman 4.5” exhaust and so I was ready to order a $1100 2-1 pipe for it. It also seemed to idle sort of rough and boggy at take off. After learning about the TTI fromD K Customs I figured for minimum investment I could try them and not lose much if they don’t work out. So I ordered them and received them two days later and so was off to a good start with DK. I pulled the baffles out of my pipes and installed the 258 TTI’s and what a difference it made! It idles like a beast ,can hear the cam so much better, and it smoothed out the rough/ boggy take off ,and seriously moved my torque range down a good 400 or so rpms. It runs great ,sounds great and I can’t wait for warm weather to rip on it! These guys at D K are the real deal. I also ordered a tank lift and plug wires and they are very prompt and responsive and highly recommend ordering from them. I have learned a ton from their videos as well! Thanks
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Thunder Torque Inserts W258 1 people found this helpfulInstall W258 SVT Boneshaker 4.5-Inch Mufflers. Installed per instructions. The sound is much deeper. I have noticed that there is no more decel popping. I have observed an increase in torque and horsepower on my 2016 H-D Tri-Glide Ultra with Stage 2 Upgrade. Very Satisfied with results.
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Made the sound better 0 people found this helpfulSound is better, no difference at idle, but quietens it just enough to help with the drone. Have not rode enough to tell for sure about power. Definitely not any less powerful. Install was easy, I think I have Full Boar mufflers, didn't even have to drill out baffle mounting holes.
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Wow!! Awesome product. 1 people found this helpfulI was skeptical like most but these really work. I put head pipes and after market slip on muffles with a cam. Tried stricter baffles and they did help some, but these inserts did the job. Still running the baffles and I am pleased with both the sound and the low and mid range torque. 2019 Road King Special 114 V&H Power duel header Torquer 450 slip on's.HD Ventilator free flow air filter, S&S Cast intake.and S&S 475c cam chest kit. Bike is a beast now. Thanks for the final touch these insert gave. Thumbs up!!!
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****** 0 people found this helpfulInstalled the 258's on my 2013 Road King with dual pipes no baffles. . Initially didn't like the sound but when I actually read the instructions and mounted them in the suggested location the sound was great. My seat of the pants dyno tells me that I did pick up a little more low end torque. Happy overall with these and would definitely buy again.
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Awesome 1 people found this helpfulI bought these for my 2016 softail deluxe with v&h 3" slash cuts and i put them on and i can tell a big difference in low end torque. Haven't had a chance to take on longer ride yet, it got cold. Awesome product D&K
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Exellent Customer Service 0 people found this helpfulMy bike is unfortunately having issues (not related to the installation of TTI) therefore I have not been able to truly take advantage of the item. I have noticed my sound is definitely lower growl vs stock and can feel the low-end torque delivery. Installation was simple but the subject I want to rave about is customer service. Every time I have a question, it's met with a helpful response in an extremely timely manner. To me, nothing else is more important.
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Poor Instructions 2 people found this helpfulHello, I gutted my stock slipons of the baffles. Then somewhat followed your installation instructions, BUT stopped on a couple items. 1. DO NOT drill a 3/8" hole Way too big. 5/16" is good enough. 2. I didn't want to have the mounting bolt at the bottom, because if you were to drive over something and this nut got caught could result in damage. So I drilled the hole at 3 and 9 o'clock respectfully, 3 for the left and 9 for the right. Hope this helps the next guy DIY'ing his own installation. Good Product
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Excellent Product 0 people found this helpfulI have a 2009 Street Glide , 48H cam and Cycle Shack slip ons , the pipes outlet is 3 inches , I removed the baffles, installed the TTI 158, they were a bit loud so installed the TTI 258, the TTI 258 have the perfect sound for me and absolutely no decel pop , this is an excellent product
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Very pleased 0 people found this helpfulBought this trike used earlier this year. After market slip ons were installed by the previous owner. The trike was obnoxiously loud, to the extent my riding buddies would not ride behind me. Installed the Thunder Torque inserts and now can ride without having to wear ear plugs. The backfiring on deceleration is greatly reduced also. Am very happy with the results.
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Improved Decel popping 0 people found this helpfulI was skeptical at first, I bought a pair and was quite surprised. I have a '14 Triglide and put a stage 1 street cannon exhaust on when I got it. Last year made it cooler with a new headder and stage 1 intake. That really unleashed my 103. The acceleration tone was a bit loud. The decell tone was too loud. Putting these 258's on fixed the problem. I gor 258's because I have the revolver tips. They fit perfectly. They worked great! Thanks D&K!
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These TTI work to get the reversion corrected and sounds great. 1 people found this helpful‘15 RGS, no baffles and cat still inside. The TTI with the 606 AC and the XIED’s really woke up this bike. The pull and throttle response is great. The TTI does it’s job and I was running without them, next day, had them installed and won’t go without them in the pipe. 2” in from the outer edge of the pipe works for me to keep them somewhat hidden, but very functional. Thanks again DK for another great product that actually works!
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Thunder toque 0 people found this helpfulInstalled on 2016 dyna with 2 into 1 no baffles smoothed out power curve
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Regained lost HP & Torque 0 people found this helpfulI have a 2022 Street Glide Standard that I removed the baffles from the stock exhaust. The sound was better but I lost some low end HP and Torque. After I installed the TTI’S I regained my original get up and go. I can’t tell any loss of sound with the Inserts. I am very pleased with this inexpensive option!!
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Highly Recommend 0 people found this helpfulI installed these on my ‘22 Low Rider ST. Installation of the TTI’s was very easy and straightforward. If you’re using your stock pipes like I did removing the baffling is kind of a pain in the butt. That being spent the whole project was around an hour. The sound is great! No more Jetson’s exhaust. On my 117 it’s got a nice deep rumble on idle and absolutely barks when you get on it. Certainly can’t complain for the price
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Great sound and keeps power up. 0 people found this helpfulI have a full stage 1 kit with catless headers and Basani 4" slip ons. I didn't really like the sound of them with the baffles installed. I tried tightening up the packing, taking it out, but nothing sounded good. I didn't want to take the baffles out and loose the power so I always thought I was stuck with what I had. I'm very happy I found DK Custom Products, this simple piece just Inserts into the baffle screw hole. I completely removed the baffles and it's a night and day difference. It has that the old twin cam sound
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Lots of performance of just a few bucks! 0 people found this helpfulInstalled the TTI W258 on my 2005 Electra Glide Classic. I had to add a coupler as the instructions stated for larger diameter pipe openings. This is the best cheapest mod that I've done. I started out by removing the packing around the baffles. I then tried the pipes without baffles. The bike just didn't feel right. Throttle response was lacking and it felt like it was falling flat when I would get on it. The decel pop turned into a bubbly horrible sound too. Adding the TTI cleaned up and lowered the tone. My throttle response came back and my seat of the pants acceleration felt much better. Plus my wife LOVES the sound of it now.
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2015 HD Triglide 2 people found this helpfulI drilled out my stock slip-ons with a 3 inch metal hole saw, took 20 minutes, very little deburring needed. One muffler had no insulation in it, (not sure what happened there), the other I removed easily with a large pair of needle nose pliers. I drilled the hole about 2 inches from the end of the exhaust and installed the TTI 258, a very simple process. The results are a great Harley sound with a deep throat and the performance is very much noticed. More than satisfied. My Trike is a True Harley now, thanks
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2002 Electra Glide Classic 0 people found this helpfulI ride a 2002 Electra Glide Classic, SE 258 Cams, Cobra Head Pipes, Jones Big Boar 3" slash cut slipons, SE (K&N) open Air Filter, Power Commander. The TTI installation was a breeze, pulling the baffles out of the Jones Big Boars was a chore but after that it went pretty quickly. Now I haven't dyno'ed the bike, and I didn't change the tune after I pulled baffles and installed the TTI. My seat of the pants conclusion is the bike runs BETTER, smoother, and has a strong pull from 2500 up. It feels stronger and really sounds amazing. By far the best dollars I have dropped on this bike. Thank you DK Customs!
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Nice sound 0 people found this helpfulMade my Harley sound like a Harley. Not sure of any power or torque gains that are noticeable but the sound is what I was after. Installed on a 2022 XLIron883 stock mufflers with baffles and cats removed.
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Very Pleased 0 people found this helpful2015 Ultra Limited 103 with catless header and 4" Rhinehart slip ons. I wanted more sound so I removed the baffles. It didn't sound that great and I lost tons of torque. These 258s were the perfect cure! Deepened the tone and gave me back the torque. Easy install. Highly recommend!
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Sound went from puny to brawny 1 people found this helpfulInstalled in 2020 Road Glide Special stock exhaust. Removed baffles and packing. 2-1/2” hole saw left a metal ring inside muffler. Used a 3-1/8” hole saw to remove ring completely. I would recommend going with the 3-1/8” to start with. Can’t really notice any difference in torque but exhaust sounds a lot better. Has a good deep tone and is not loud enough to be obnoxious. I would definitely recommend this product.
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2021 TriGlide install 1 people found this helpfulput these on a 2021 tri glide after removing the baffles and packing from stock mufflers. Easy install. I had to drill two holes.
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thunder torque 258 2 people found this helpfulput these on a 2020 tri glide after removing the baffles from stock mufflers, made a very noticeable difference, well worth it.
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Wow 0 people found this helpfulPut these in my 2012 ultra with full boar mufflers..pulled baffles out install them..wow what a difference they make..
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Thunder Torque 258 0 people found this helpfulInstalled 258s on my H-D FLSS that had the baffles completely removed. Gave some back pressure back and toned down the excessive noise. Easy to install and adjust.
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awesome 0 people found this helpfuli have the new SE slip-ons and was debated dropping a ton of money on new pipes. did a lot of reading and found out about TTI's, and they were just the ticket. pulled the baffles and installed the 258's--WOW what a difference. the new SE slip-ons w/no baffles and TTI's sound like the old SE slip-ons. Do yourself a favor and pick these up!
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Not Sure What It Did 0 people found this helpfulThis is super easy to install. Made my bike have a lot more pop on decel. Did not seem to tone it down or make any noticeable difference in the exhaust or power. The threaded stud needs to be longer to fit in the middle of the exhaust that I have so it looks a little goofy being lopsided. Not too sure what it did or any benefit for my bike.
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Excellent 0 people found this helpfulActually started off with the 99.95 inserts with the tongue and in less than a month both were burnt out and tongue was gone. Can't see why as never touched and must have been too hard and brittle, don't know. So ordered these at half the price, easier to install, look nice and I can guarantee they won't be going anywhere. If it made it quieter, I couldn't tell and neither can the neighbors. Work great and highly recommend!
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Wow what a difference 0 people found this helpfulCan’t believe how much torque and HP I gained from something so simple but highly affective inserts. They even took care of my excess head pressure, no more oil in the air cleaner. Not even the money I wasted on a fueling vented dipstick did anything for the problem, which is why I spent 275.00 on it in first place. Thank you so much D&K for an awesome product.
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INCREDIBLE!!! 0 people found this helpfulThese truly are worth the money …. Pulled the baffles from my 2014 Forty Eight installed these bad boys and damn what a difference in the torque and the sound. Ran a new map on my fuel tuner and it’s nothing but badass!!! The torque difference is immediately noticeable.
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Works as advertised 0 people found this helpfulFitted in V&H Torquer 450s, which do lose bottom end despite what they say. Thunder Torque Inserts brought the lost Torque back and slightly quieter which is what I wanted. Thanks all.
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Well Worth It! 0 people found this helpfulInstalled on 2020 FLHX with Vance and Hines Power Duals and 41/2 Hi-Output Slip Mufflers, this is exactly what the bike needed really woke up the bottom end and the sound is so much better! I was surprised that something this simple and inexpensive does what is says it does Thanks Dk!
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Great item 0 people found this helpfulinstalled 258 TTi on 2004 Roadking with Rinehart true duals. Very easy installation. Removed baffles and what a sound it produced. I bit loud but overall it sounds awesome. you wont go wrong buying them. ENJOY THE RIDE.
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Wow! 0 people found this helpfulThe sound and low to midrange torque is amazing! Removed the baffles and installed TTi 258s on V&H 4.5” Titan slip ons on my 2010 Ultra Classic. Pipes gave me that louder, deeper tone I was looking for and the butt can feel the increase in torque. Sounds closer to an old school Harley now!!
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lollipops 0 people found this helpfulWorks as advertised, quite happy with the results. Bike is '08 FLHT with Stage 2 set up, and true duals. Shipping was fast, with zero problems. Product appears well made. Definitely would recommend to a friend.
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Best $50 I’ve ever spent. 0 people found this helpfulI have 2 inch straight pipes on my sportster 883 and I was looking for something to add both tone and back pressure, if you’re in a similar situation look no further! These were exactly what I wanted and the install was insanely easy. Absolutely love these.
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Well worth the money 0 people found this helpfulI built a short 2 into 1 exhaust for my 2017 Road Glide that turns out right in front of my saddlebag ...i took out the catalytic converter as well...i put another companies baffle in it...it woke it up from around 3200 rpm and above but it felt like i lost low end torque...so as i was doing resesrch i read about these Thunder Torque inserts and thought why not...they were i expensive enough that i didnt feel like i had much to lise...tore it back apart
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what every stock pipes need 0 people found this helpfulthese puppies are AWESOME. thank you DK Customs...
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cool inserts 0 people found this helpfulI was looking for something to give a little back pressure on the pipes and these inserts worked out well. Easy enough to install, I had to do a little modification on my slip-ons but it all worked out. Its a good buy.
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Best bang for buck 0 people found this helpfulI dislike the stock mufflers and also hate loud pipes wanting just enough sound to be heard but not obnoxiously loud. I was very sceptical of these and ordered them on a lark. The size I ordered was wrong and I had to make them fit. That said the sound is just right and makes the bike sound like it should off the showroom !
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Great product 0 people found this helpfulDid exactly what I needed. Wanted the baffles out for louder piped but didn't want to loose the back pressure.
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Thunder torque inserts 258 0 people found this helpfulWell I was very skeptical about these inserts, but wow the performance was felt at the low range and upper end of all RPM in town and highway speeds. It made my exhaust tone alittle deeper. These inserts are the best money spent for the performance gained. Installed on 2018 Ultra Limited TAB PERFORMANCE slipons with baffels removed. Thank you DK PERFORMANCE will recommend
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Thunder torque inserts 1 people found this helpfulArrived within a few days of ordering. Great quality and had them installed on my triglide in 30 minutes. Am feeling more low end torque. The significant distinction DK offers is the extensive research they’ve done to make these V twins run cooler, stronger and longer. All their products are backed with earnest by them. I buy direct from them or thru eBay.
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Absafukinlootlee Awesome 0 people found this helpfulJust Installed On My 15 Road Glide Special... I have Freedom Performance Racing True Duals I Pulled Baffles And Installed The Inserts Which Was Pretty Straight Forward Taking About 30 Minutes What An Awesome Upgrade For Very Little $$$ Sounds Bad Ass And Definitely Has More Horsepower And Torque Definitely Recommend Thanks GB
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Amazing product 0 people found this helpfulI’m no mechanic but I’ve been riding for long enough to know what works and what doesn’t. I purchased the 3” Thunder Torque Inserts assuming I’d be throwing my money away, boy was I wrong ! Not only does the bike generate more power but it controls the sound. So now I have a powerful Dyna and I don’t wake the entire neighborhood when I go to work at 4am. Totally worth the buy.
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TTi Great Results, Small Price 0 people found this helpfulI have installed the Thunder Torque Inserts in the baffles of my V&H Twin Slash Cut mufflers. Man what a change in increased power and the sound has been deepened with more volume, not necessarily more noise, just good solid sound! Great Product.
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Best bolt on performance for your buck. 0 people found this helpfulImmediately noticable performance gains over old setup with limited back pressure. Bike sounds great now and doesn't leave my ears ringing anymore. I recommend an extra jam nut to secure it as I had one torque insert fly out down the highway, but with the cheap price you can certainly afford to replace them if you don't get it installed right the first time.
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Worth a try. 0 people found this helpfulOrder came very quickly and was as described. I ordered them for my single sided exhaust on my 2012 Rodglide and I immediately noticed that when decelerating the backfiring had subsided. Worth it in my opinion. Thanks DK Customs.
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Excellent Product 0 people found this helpfulThe inserts were easy to install. Made the sound of my true duals much more crisp and deeper. I just put them on a couple of days ago and in the process seeing where they need to be adjusted too. I installed them in roughly half open position and in a day or so will set them to full closed (perpendicular) position to see if there is any change in performance at various rpms.
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Feel the power and hear it too! 0 people found this helpfulAn extra giddy-up off the line. Put these in V&H slip ons with S&S power tune crossover header. Love it!
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Quieted a LOUD exhaust 0 people found this helpfulI installed a pair of the 258's in a 3 inch cat back system on my Jeep SRT and it really did the job! I had to set them to about halfway open for best results.
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Thunder Toque inserts 258 0 people found this helpfulFast Shipping, Easy to install. Made a world of difference in the sound. Gave my 2017 Sportster a throatier sound and seem to quiet it down a little. More torque. Great product
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‘17 HD SGS Mutazu megaphones + TTI-258’s 0 people found this helpfulRecently installed these into my Mutazu Megaphones 4in pipes. Originally had them installed in my stock pipes that I had gutted, but decided to stick with my Mutazus. I removed the baffles & removed the fiberglass packing surrounding the aluminum mesh baffle. I wanted to keep the baffle to fill in inner circumference of megaphone, so opted to keep them in. Had to modify TTI’s by cutting away roughly 10 threads & incorporate 5/16-18 couplings (course thread). This allowed them to be centered within pipes. The thread studs on the TTI’s weren’t long enough, so per instructions, I had to utilize couplings. Then just used 5/16-18 1in hex bolts, followed by a flat washer & lock washer. Man, these TTI’s are great. Opened up even more deep tone in my megaphones & the performance, low & mid range, is considerably noticeable as well. Thank you DK Customs!
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I love this product with my Vance and Hines Slip-On mufflers 1 people found this helpfulI installed these on my 07 Road King. This was one of the best modifications I’ve made to my bike. The sound of the pipes with these installed is incredible! The performance difference in the low and mid power range was easily superior to any exhaust modification I’ve seen. I run them with the baffles removed. I will have these in every bike I own for now on. Oh and I almost forgot there was no tune modification need to remove the baffles and install this product. Thanks for a great performance and sound adding product DK customs
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2017 SGS stock exhaust debaffled + TTI-258’s 0 people found this helpfulRecently de-gutted stock exhaust on my 2017 SGS & added these TTI’s. Had on for awhile some Mutazu Megaphone slip-ons which sounded great, but for some reason I like the look of the stockers. In the past I used to make my own lollipops, similar to Big City Thunder Monster baffles design. But this time around, thought I’d try a different route since I’ve heard of this DK Customs company before. You definately can feel a difference & the sound has become more of a throatier kinda sound without a lot of backfire & high pitch. One thing I would suggest is instead of using supplied double nuts for runoff security, I just used a nylon nut or even a close tolerant aircraft grade nut would suffice. That way, cosmetically, it won’t look odd having the threaded stem of the TTI with 2 double nuts hangin’ down or to the side, whichever way one chooses to install.
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Just As Advertised ! 0 people found this helpfulSimple to install, even for the shade tree mechanic like myself. I already had Reinhardt exhaust, so the HP/TQ did not increase significantly, BUT throttle response is a bit more snappy and exhaust note is louder and lower. Another great product. Very happy. Good job D&K!
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Thunder Torque Inserts! Yes! 0 people found this helpfulMade my sporty even sporty-er! Believe the hype! Excellent/inexpensive method to increase torque with a deeper badass-er tone! A must!
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Excellent 0 people found this helpfulThese inserts are a great product. My bike now has sound and i can feel the increased torque.
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Hold tight... 0 people found this helpfulExcellent bang for buck. Ever felt light headed after launch, these will help you get there!
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Amazing 0 people found this helpfulBest bang for the buckbupgrade i have. Cut my own pipes. My bike, my rules. Easy to do. Super fun project and the reward hurts ur face. Cause u wont stop smiling. Ill be buying more of dk customs products for sure. Stage 1 air cleaner next.
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Sets ya apart 0 people found this helpfulWith most bikes sounding all about the same nowadays these are just the ticket to set you apart from the rest. The performance gains are undeniable, the sound is outstanding, the cost is fair, and the installation is a snap. If you want to have others here ya coming and know it's you without a doubt, if you want your torque and your sound than these are for you. I'm running them on my 16 ultra limited in full boar mufflers from Jones exhaust. I pulled the packing and put the baffles back in with the tti's at the end best sound out there!!!!
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Great product 0 people found this helpfulThese things really do work. They gave me more tq off the line and quieted my loud muffler just enough to make it sound great. Make sure you loctite the nuts a lot, or you will loose them. I think they are a little over priced, but would buy again.
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Amazing!! 0 people found this helpfulI removed my stock baffles and cats and installed the TTIs. They are awesome! They provide an adequate amount of back pressure to keep or make more low end torque while having that great Harley sound everyone is looking for. Best bang for your buck!
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Crazy how good these are 0 people found this helpfulI have a 2018 Softail 114 with stage 2 torque cam. I had short shots on it and they ran and sounded ok. Only after my original purchase of short shots did I find out that short shots were probably hurting my torque curve. (Bad on me) These came super quick. I removed the VH baffle and put these in. I was expecting very little. It sounded close to the same as the baffles that were in it. Then I took it out for a ride. It woke the bike up in the usable RPM range a lot!! No more dead spot in the throttle. Nice clean pulling power right where I want it. 2-3k rpms. Then I thought maybe I should just spend the money for a better exhaust. a 2-1. So I bought a Bassani Road rage. I put it on. Huge dead spot in the low RPMs. twisting the throttle was ridiculously unresponsive I was very disappointed. So I ordered the larger torque insert for the new exhaust. I removed the stock baffle from the road rage exhaust and put in the torque insert. Usually if something sounds to good to be true, it absolutely is. Unless your buying these. Learn from my mistake. Don’t buy a new exhaust. Buy these. For 20-30 dollars these are more than more than worth it.
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Freakin Awesome NO BS 0 people found this helpfulI bought a set and easy install. WOW they are not Bull Sh**ing they really work. I told a friend and he also experienced getting back the lost power from baffle removal. i swear by them.
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Great sound 0 people found this helpfulThey showed up yesterday and they help sound tremendously zero decel pop and set off a car alarm going around my block. As for performance I’ll have to wait for weather to change to get a good test run in.
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Excellent 0 people found this helpfulI was recently able to get a hold of a pristine 100% factory original 2007 HD CVO Softail Springer in Canyon Copper, Candy Red w/ 8,700mi. I absolutely love the bike, but the factory tailpipes were stifling the Screamin Eagle 110. I painstakingly removed the tailpipes then easily removed the innards, installed the Thunder Torque Inserts and replaced the tailpipes. The sound is absolutely what it should be!!!! The bike runs just fine, although I will be getting a tuner. In comparison, it sounds like although a little quieter than my 08 Softail Custom w/ V&H Shortshots Staggered. THANKS
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Great product for a great price! 0 people found this helpfulI bought these for my 2012 Victory Cross Roads and I couldn't be any happier with them!!! Definitely worth every penny!
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Terrific experience 0 people found this helpfulIt is amazing..mine is MY18 Slim 107..but feeling now is like riding 114 or 117..feel torque right there at every moment..like installed stage 2 or 3..coupled witj V&H 2 into 1 propipe and velocity 65..great..great..
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Good stuff! 0 people found this helpfulI bought these TTI 258s after having a baffle shoot out of my Screamin Eagle II slip on while cruising down the highway to work. I had no low end torque and it sounded terrible. After popping out the other baffle and installing these, I got an improvement in torque and sound. The SE II slip ons already sounded great but now they have that real Harley sound and my little Sportster Custom screams down the road. Thanks!!!
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Money well spent! 0 people found this helpfulSo I emailed support about the TTIs to ask about ways to change the sound of my pipes. I have Tab BAM Sticks with Zombie Baffles on my '19 Street Glide Special and I loved the loudness, but didn't like the tone. I purchased some TTI 258s and they arrived today. Pulled my pipes, removed the baffles (inserts wouldn't fit between the baffle and the cap) and installed the TTIs. WOW!! Just the sound I was looking for... Deep and loud. In my opinion it sounds like Harley should. The increased power in the 2000-4000rpm range is incredible! Money well spent for sure, I'll be recommending these to other riders!
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A Must Have 0 people found this helpfulI installed my TTIs on my 2013 FLHTCUSE8. WOW. I love that Deeper Tone. I then took it for A short Ride and I can tell you one thing here. I am Still smiling. Even With The Baffles, I really Felt the difference in Power. I mean it really really goes.
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Awesome product 0 people found this helpfulI cannot believe the difference it has made to the bike. Well constructed,heaps more torque , better ride ... thanks DK customs. Arrived on time as well , all the way down under.
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Essential stuff 0 people found this helpfulI’ve been running thunder torque inserts in stock Dyna exhaust with the entire baffles removed for over a year and they are awesome! Loud, throaty, perfect pitch kinda sounds carbureted, perfect amount of deceleration pop. Anyhow, I lost one (broke the metal where it was bolted on, haha) and my bike became obnoxiously loud and ran like shit. I welded a washer over the hole and replaced the insert and now I’m back in business. It’s amazing how much difference this simple little product makes!
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Worked great! 0 people found this helpfulReally added torque and mellowed out my 4” Megaphones from KC International. Not too loud now. A great choice.
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TTT 2 5/8 quiet Rinehart bark on FLSTC 0 people found this helpfulInstalled TTI 2 5/8" in my 3" Rinehart slip-ons in a 2007 H-D Heritage Softail, and it really took the edge off the Rinehart high pitch bark and greatly reduced decel popping. Hesitant to drill a hole in those pretty Rineharts but I am glad I did, no more riding with ear plugs or ringing ears in a full face helmet! Rinehart tone is still there when you open up the throttle, TTIs have been an effective solution, thanks DK Custom!!
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2007 Night Train w/TTI 258 = Snappier and better sounding ride 0 people found this helpfulQuality product and an easy install. Bike feels snappier and sounds better. Product was installed in a V&H Competition Series 2-1 exhaust with baffle removed.
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Small change 0 people found this helpfulCustomer communication was ok. Took a couple times getting thru t actually speak to someone, but after getting my questions answered i was able to order what was needed. Installation was fairly simple. The insert did quiet my pipes down a little bit which is what i was hoping for. Overall satisfied.
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2018 fxlr w258 torque inserts 0 people found this helpfulI just got my w258 2 into 2 torque inserts for my 2018 harley Davidson lowrider, I drilled out the factory baffles on my bike and took all the packaging and everything out (catalytic converter) and put the inserts in and immediately fell in love head over heels for the sound and power I gained, with just 2 small inserts in a straight pipe its astounding the physics behind these to be able to do such a magic trick on a bike. Thsi honestly the best 30 bucks I've ever spent on anything.
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Great product 0 people found this helpfulAfter calling and talking with Dwayne a couple times I purchased the 258s for my 17 Tri-Glide with Screaming Eagle Street Cannons. I ended up leaving the baffles and mounted them at the half way point of the tips. I ride to work each day through the country with several hills and curves staying mostly below 50 mph. I have noticed that I am having to downshift less during my trip indicating A good increase in torque at the lower speeds. I also believe they have increased my gas mileage both around the country where I normally ride as well as on the highway during a couple long trips I have taken since installing them. Recommend them highly!!!
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Excellent product 0 people found this helpfulI brought the thunder torques for my partners 2007 fat boy, he is over the moon with the sound and performance of his bike now, we totally recommend this product if you want a louder and better performance bike, best money we’ve spent on the bike by far, thank you DK customs
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2019 Iron 883 with 3" slip ons with baffles removed. 0 people found this helpfulFast shipping. The W258 TTIs restored my lost torque and acceleration, and they got my bike sounding awesome!
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Awesome upgrade! 0 people found this helpfulI bought a 2012 Softail slim, bone stock. After looking into full exhaust systems I came across these insets and figured it can't hurt to try them for the price. MAN WHAT A DIFFERENCE! Removed the baffles and installed the 258's and not only can I HEAR the difference but I can FEEL it in my butt dyno when riding. I might just keep the stock pipes on it now!
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258s In My '12 Nightster 0 people found this helpfulI recently purchased a 2012 Harley Sportster 1200N Nightster. It had stock mufflers on it that just didn't provide the "sound" you commonly associate with a Harley. This was evidenced by the 3 times I was almost wiped out by people changing lanes right in to me because they either weren't aware of my presence or just weren't using all their faculties to be attentive to the road, their actions, and other motorists. I looked around for ways to increase the sound output and mostly came up with completely different mufflers or ways to simply remove the baffles inside the stock mufflers. Then I came across DK Customs TTI, Thunder Torque Inserts. Not only was it a reasonable means to increase decibels of exhausting, it gave the added benefit of back pressure for torque output. And the price was exponentially less than completely replacing the mufflers with something that was essentially going to do the same thing. I reviewed the tutorial videos and collected data, watched the instructional, and set in to order a set after confirming with Dwayne which product I needed. Installation was simple enough, if somewhat exacting and delicate, and adjustments took no time at all. And the sound.... Holy Moley! "Thunder" Torque Inserts is right!! My Nightster went from a gurgely, sputtery Kawasaki sound to the rumbling, throaty, bark of a Harley! And the low end torque increase is dramatic! It now pulls like my 1200XL Custom does! I honestly can't believe how vast of a difference, an improvement, was made by such a simple insert and at such an incredibly low cost. These simple inserts are well worth the price and I would recommend them to anyone who is on a budget, not afraid to make modifications, and wants a deep, growling bark for their bikes sound without sacrificing power by simply hollowing out their mufflers. Worth. Every. Penny!
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2016 XL883L OEM Tapered Pipes Install 0 people found this helpfulThese were installed in my wife’s 2016 XL883L. Her pipes are the OEM tapered exhaust. For this install, I used blue painters tape with military map markers and tape measure to evenly mark my cut line at the taper line, which measures 4 3/4 inches from the end of the exhaust pipe. When cut at the taper, tapping out the baffles is too easy!! A band saw came recommended from Dwayne, which I purchased and then soon found out that I knew nothing about the required number of teeth for a smooth cut. I’m sure this method works fine, but I went with a Dremel and EZ Lock Metal Cut off Wheel and Adapter, about $30 in sum; and returned the band saw. This method provided a smooth cut all the way around. I then locked my angle grinder with a 40 grit flap disc in my bench mounted vise and evened up and smoothed the edges where I cut. Perfect finish!! These do provide an increase in power and the sound is much deeper than my XL1200X with V&H Short Shots. It sounds great and my wife loves them! Her biggest reason for getting these was to be heard by cages. The increased performance is an added benefit that she thoroughly enjoys!
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05 ultra sounding sweet 0 people found this helpfulAs the title suggests I have an 05 ultra classic, the bike has a Reinhardt stepped header and Rush 3.5” cans with 1.75 baffles, the exhaust combination has always performed well but was just a bit loud and high pitched for my liking! I discovered the DK TTI and questioned if for this small price could these be the solution or is it just another BS product out there making big claims. I figured why not try a set since they are simple to install and if I don’t like them let’s be honest it’s the cost of a few good beers, TTI’s arrived quickly and nicely packaged, installation was quick an simple with the rush cans (I ordered 2 5/8” insert per DK)! Upon first fire up I instantly noticed a change in pitch and volume of the exhaust and all for the better, took the bike for a ride and same thing over all tone and pitch is now deeper, softer and just better, from a stop light the bike feels to have slightly more torque but it’s always pulled well on the bottom end, ran the bike just south of the rev limiter in 3 gears and it pulls clean and crisp all the way! Very happy with the TTI and I believe this is a prime example of often times simple is better! Great work DK.
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WOW game changer 0 people found this helpfulAfter many upgrades and age my E-Glide with cobra head pipes and DNA 4 in exhaust had lost it sound and became too loud for me, installed 258 and got back so much more, torque you can feel and see, the old Harley sound we love, and not to loud, this is a must have product if you have true duals, it will put in the back pressure in the engine.
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Sound and Performance 0 people found this helpfulI have a RGU w/ 4" slash cut Vance & Hines performance slip-ons. I removed the baffles to increase the sound and my safety. I lost torque and the sound was super loud. My buddy recommended the Torque Inserts and what an amazing difference in low and mid torque!!! I tried 3 different angles for the sound and decided to leave the inserts flat against the diameter of the pipes. Strong Sound! Deep and throaty.
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Good sound 0 people found this helpfulRemoved the cat and installed 4" mufflers, removed the packing.. I knew my back pressure was going to be screwed up. So I bought the inserts. It has a lower tone to it now. More of the old HD sound. Dont know about any more power... Its to cold and sloppy on 1.5 miles of gravel to try it out. Easy install removed the bolt for the baffle and installed in the same hole.
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Nice product 0 people found this helpfulI took a set of stock 09 dyna slip ons, cut 3 inches off the back, yanked the baffles out and installed these. Results were pretty spectacular. I ran it for a few days without the inserts and my bike was super loud but sounded like crap, excessive decel pop among other annoyances. Bike already had open intake and ViED’s. After TTI installation this bike runs great and sounds awesome! Deeper tone and decel pop was lessened. Perfect to my ear since I like loud bikes with a little deceleration noise. Bike runs cooler. One of the best inexpensive upgrades available!
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TTI W258 On Full System 0 people found this helpfulHi DK, Just wanted to drop you a note to let you know that I am on my second set of Thunder Torques on two different bikes and the results have been incredible. My first set of TTI's were used with V&H slip ons and they worked great. My second set are on Samson true duals with 4×30 inch mufflers. Results are fantastic, raw power. The young lady who helped out in customer service was great too. Thanks Dave
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W258s in stock 2015 Street Glide slip-ons 0 people found this helpfulAfter installing a set on my Sportster 48, I decided to try these on my stock take-off slip on mufflers. I originally had Screaming Eagle Street Cannons, but after I removed the cat from the stock headpipe the sound was terrible. Raspy, loud and blubbery sounding. I orginally got the W258s to try in the Street Cannons but they were a 4 inch inside with no packing or filler, so the TTIs were way too loud and lost a lot of the deep rumble I wanted. This is a design flaw of Harley’s in my mind - and that’s on top of the end cap design which was a nightmare to work around. I put my stock slip-ons back on for a few months and it sounded okay with the de-catted head but I wanted more. I watched countless YouTube videos to see if I could get a deep rumble without too much volume and finally decided to try these on. Cutting out the stock cone baffles was straight forward. I used a cutting wheel with a power drill and cut right behind the weld inside the muffler. Once cut, a bit of wiggling and pulling took the cones right out. The next part was critical in getting the sound I wanted - leave the inners with the fiberglass wrap in the muffler! Mount the W258s as close to the end of the fiberglass packing as possible for the deepest sound. I love the way my bike sounds FINALLY. It is deep and powerful without being too loud for a touring bike. It sounds like a hot rod to me. The only downside to this whole thing is a feel like an idiot for wasting time and money on Street Cannons. Decat your stock header, use these to replace your stock slip-on cone baffles and ENJOY.
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Thunder torque inserts 0 people found this helpfulI just removed my baffles on my 2014 Harley Davidson Sportster xl1200 and inserted the TTI's and when I turned on the bike my jaw instantly dropped. The bike is loud
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Thunder torque inserts 0 people found this helpfulOrdered a set of the 258 inserts expected delivery in 4-5 days recived them in 2 days install was easy enough. The sound is a really nice rumble, torque increase for the buck is fantastic. Bang for the buck best thing I've every found!
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