DK Custom Products

Phone: 662.252.8828
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Premium Catch Can EBS Breather System For Harley Twin Cam

Availability: In stock
Manufacturer: DK Custom Products

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Premium Catch Can EBS System Harley Twin Cam DK Custom External Breather System Sportster & Big Twin Evo Roadster  High Flow M-8 Milwaukee-Eight Softail Twin Cam Dyna 72 48 Big Twin Evo Nighster Iron Stage I



External Breather System




DK Custom Products

Made in The USA!



  • Fits All Outlaw & Many Other Air Cleaner Systems
  • Chrome Banjo Fittings at Heads for a Clean Look
  • Allows Discrete Placement of the Catch Can
  • Your Choice of a Aluminum or Black Vented Screw Top 4 SStage Catch Can
  • Includes 6 feet of hose for maximum flexibility in filter placement
  • All needed hardware (including a Brass & Black T-Connector) ... use whichever one matches your Bike Best
  • Turn-Key System
  • Optional Black Fiber or Stainless Steel Braided Hose
  • Optional Hose Clamps & Covers 
  • E-Z Install ~ Step-by-Step Instructions Included


An External Breather System (EBS) is preferred with any Air Cleaner System.  This allows for only clean cool air to go into the air cleaner and engine, increasing performance and engine longevity. 

This kit will work with ALL OUTLAW HiFlow Air Cleaners and many other aftermarket Stage 1 Air Cleaners*.  

The EPA has required Harley to route hot, dirty, oily crankcase air back into the air cleaner compromising the performance of your engine. This vents it without compromising the performance and longevity of your motor.

With this breather system you will experience a slight performance increase.  This is because engines like Cold, Dry, Oxygen Rich air!


When ordering, Choose a Machine Cut Aluminum Finish or a Black Powder Coat Finish.

The Machine Cut Billet Aluminum Finish that can be polished to a Mirror Finish.

The top of the Catch Can is attached to the hose by a zip tie or hose clamp (both supplied w/ the kit).  The bottom of the Catch Can threads to the top. 

Anytime you want, you can un-screw the can portion, empty out all the gunk, and then thread it back together.

The top of the Catch Can is vented, letting the air escape, while the 4 Stage Filtration catches and holds the oil.

The Catch Can is 1 1/2" in diameter and 2 5/8" tall.  For more details on the 4 Stage Catch Cans, Click HERE.


E-Z Install

Fits All Twin Cam  & Milwaukee-Eight Models - 2000-Up Touring & Softails, 1999-Up Dyna 

*Fits ALL Outlaw Air Cleaners.  For aftermarket A/C's, If your air cleaner system utilzes a support bracket that is no thicker than 1/4", this will fit.  

There are Optional Black Fiber & Stainless Steel Braided Hose  & Black or Chrome Hose Clamp Covers, and blacked-out hose clamps if you prefer that look to the Black Hose and plain hose clamps or zip ties.


Caution:  Motorcycles modified with this DK Custom Products High-Performance part may not be legal for public highway use in some areas.  The user shall determine suitability of this product for his or her use.

Customer Reviews

Perfect Review by B. Johnson
You won't be disappointed. Everything need to keep that dirty blow by from getting back into the motor. (Posted on 6/24/2021)
Breather system Review by WMitz
Great product. Fit and finish is top notch. Fairly simple install, seems to be working as expected. I used a couple of extra hose clamps rather than the zip ties. Hides well behind the 828 air cleaner on an m8. (Posted on 6/15/2021)
Ebs system Review by Mick
Great product. Used for 606 air cleaner on a 2014 FLHTCU. Lots of hose, blended right in. (Posted on 5/19/2021)
Excellent product! Review by HogWart
I bought this along with the HiFlow 606 air cleaner for my 2018 Roadglide Special. It is very well made, and everything you need is included. DK even gives you lots of extra hose to allow for re-postioning/mistakes. (Posted on 4/22/2021)
Easy fix for a growing problem on the M8 Review by gardenho
Thoroughly impressed, kit contains everything you might need. I installed this along with the 587 Air cleaner kit for M8 on a 2017 Freewheeler. I am a woman - if I can do this then anyone can do this! DK Customs provides excellent, easy to follow instructions.

I really wanted to hang that shiny little catch can directly under the air cleaner but clearance was iffy, so I hung it to the left side hanging straight down from the left breather bolt with the right side hose curved under the air cleaner and it still looks great! I suppose I'll be answering Q's as to what it is now, even my husband asked what it was before I installed it LOL. Later I am going to replace the black hose with braided stainless hose because it will look better than great then.

I am looking forward to no more oil misting on my rides, it's become a real problem and although still under warranty my dealer refused to cover costs for the HD fix. Installing this voids the warranty too, but no matter as its up in a couple weeks anyway. Their fix estimate was triple the cost of this too, crooks...or did they think they could take advantage cuz I'm a woman? Quite frankly, I trust DK Customs more than I trust them when it comes to what is good for the bike and everything I have purchased and installed from DK has performed exactly as described. (Posted on 3/20/2021)
Dk catch can Review by Pearljohn
So far , so good!! Awesome product! (Posted on 3/18/2021)
Great product Review by Link
So glad I got this set up and it’s exactly what I wanted. Got DKC on my favorites. (Posted on 1/26/2021)
Clean look Review by Easy install
Doing anything I can to cool down my TC. Installed the breather system with can and the hardest part was trying to figure out how I wanted to mount the catch can. Great value and clean looking on the bike. Extremely satisfied (Posted on 12/10/2020)
2017 Slim S Review by Manchild
So I wanted to comment on my first ride with this breather kit from a couple days ago. I have a 17 Slim S and I installed the catch can version of this breather kit. The black can with the black braided hose is very stealthy and just plain sick looking. So today I got to go for a ride and I know butt dynos are only worth the opinion of the owner of said Butt. Lol ........But........... DAYUM!!!!!! She really pulls much harder and the rpms seem to climb faster too. It's even MORE torqy feeling. Lol Love it. No more oil mist air going into my ride. Just clean humid (NJ) air. LOL. Just follow the directions carefully. I am COMPLETELY satisfied with this mod. Thank you DK for awesome products. God Bless. (Posted on 8/24/2020)
Premium cath can EBS Review by John
A very nice kit to get rid of putting harmful sludge in the TB. I opt for the SS braided hose, and chrome hose ends, and it makes your ride pop. (Posted on 5/19/2020)
Works great. Review by Rich
This catch can keeps all the gunk in the can.
Another great product. Thanks (Posted on 10/21/2019)
Awesome product Review by Brian
Easy to install, no leaks and no more hot,oily air in my throttle body, had a question and contacted customer service, DK customer service response is absolutely outstanding, I highly recommend this company, have purchased previous items and haven’t been disappointed yet. (Posted on 9/22/2019)
Collector Works great, but banjo bolts were not air tight Review by Joe
I purchased this kit after a failed attempt with a Golan oil collector to prevent oil blow-by spraying on my chrome pipes . The DK premium oil collector is a superior design to the Golan, is bigger, and so far has prevented any oil spray from coming out the holes at the top of the collector.
The banjo bolts and washers do not create an air/oil tight seal and there was some oil escaping between the banjo bolt and washers. I added some high temp gasket sealant between the banjo bolts and washers which solved the problem. (Posted on 8/12/2019)
Money Well Spent! Review by Wes
Installed this along with Catch Can and HiFlow 606 Air Cleaner. As I said in that review, the benefits after installing the PV Tune were instantaneous. I'm thoroughly pleased with the ease of installation, performance and all other aspects of this purchase. (Posted on 5/4/2019)
catch can Review by Cecil
the braided hose need to be real braided hose not braided covered hose. (Posted on 3/15/2019)
Great product, worth every penny Review by Red
This is one of the best jobs of "one size fits whatever" that I've seen. Plenty of hose and fittings for any configuration that I can think of, no worries about whether it'll fit your needs. Could tell an immediate difference without the oil getting sucked down the engine's throat. Finish of all parts definitely up to DK's high standards. (Posted on 9/25/2018)

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