Long Thread Thunder Torque Inserts 258 for Increased HP & Torque
In stock
SKU
DK-LT-TTI-258
Views: 0
Manufacturer
DK Custom Products
$29.95
LONG THREAD THUNDER TORQUE INSERTS™
Increases Low & Mid Range Torque
Adjustable Sound Volume & Tone
For Your Exhaust
MADE in The USA!
by
DK Custom Products
FEATURES & SPECS:
- High-Temp Powder Coat Finish
- Stainless Steel Studs (5/16" diameter)
- Includes All Hardware
- FITS 3" diameter & larger Slip-ons (other sizes available)
- Increases Low & Mid Range Torque
- Increased Exhaust Gas Velocity
- Increased Inertial Scavenging
- Adjustable Sound Volume & Tone
- Option for only 1 TTI for 2-1 exhaust systems
- E-Z Installation Bolts into the end of the slip-on muffler (using the baffle bolt hole)
- Patented Technology
- Made in The USA!
The LT (Long Thread) Thunder Torque Inserts™ are appropriate for about 3% of the Harley exhausts out there. Click this LINK to see a full Description of the Thunder Torque Inserts™ that are applicable to most exhausts.
The LT TTI's are only for use as outlined in the video below. Please watch and determine which you need for your application.
If, AFTER watching the video, you are still not sure if you need the Standard TTI's or the LT TTI's, please email or call us and we will help out.
662-252-8828
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Top customer reviews
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Thundertorque 258, LT 0 people found this helpfulWork as advertised. Have 4” Rinehart slup ons on an Indian 116 Thunderstroke….You can see straight theough them. They were just too loud. Added the 258 inserts in the end caps using a hole I drilled. I also shortened the threads a bit to get them installed. Much quieter at cruise, but still know I’ve got Rineharts on the bike when twisting the throttle.
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TTI 0 people found this helpfulits great works okay on my SE exhaust. tnx
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Great product, easy to install 0 people found this helpfulvery easy install and sounds good.
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Great product 0 people found this helpfulI bought the Thunder Torque inserts for my 2021 CVO Triglide. I removed the catalytic converter, and removed the baffles and packing from the stock slip ons. The sound is amazing, and the thunder plates did a great job of adding just enough back pressure to provide added performance. Also, there is no popping when you let off the throttle. I would definitely recommend this product.
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Awesome Addition to My Exhaust 0 people found this helpful2017 Road Glide Ultra with 4in Slipons I removed the baffles and lost torque and had a ton of back pressure pop on decel. This improved the popping by at least 90-95% and the torque in 5th/6th is back in full force. Highly recommend!
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Great product, immediate effect 0 people found this helpfulI bought these primarily to attenuate the tone of my exhaust which it does great, now I have a deeper rumble. There is also a noticeable increase in torque and improved throttle response. Great bang for the buck!
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Torque inserts 0 people found this helpfulSuper easy install. Sounds awesome too. Definitely worth it.
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Thunder torque 0 people found this helpfulDefinitely felt a difference and took the recommendation of leaving out the baffles and best of all its made in the USA
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Thunder torque inserts 1 people found this helpfulAfter installing 4.5 inch Sharkroad pipes my ultra classic would not run approximately. I had the bike retunned and still alot of popping with deceleration and not very good low end torque. After installing the thunder torque inserts all my problem went away. The bike ran better in all ranges and I was able to hear the radio again. Great product and highly recommend these for unbaffeled pipes.
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Thunder torque inserts 0 people found this helpfulSo I upgraded to some larger 4.5 inch pipes and had alot of performance issues. After I had the bike turned it ran better but still some issues with backfire and popping on deceleration. I put a set of the thunder torque inserts in and all the issue went away. The bike runs smooth again, better low and mid range performance and I'm able to hear the radio again. Highly recommend the thunder torque inserts for large unbaffeled pipes
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Much better sound and midrange performance performance 0 people found this helpfulThis is the second set I have purchased. I put a set on one of my other Harleys and liked them so I bought more to put on my 2012 FLHTCU.
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Thunder torque inserts 0 people found this helpfulExcellent product. Work great.
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