DK Custom Products

Phone: 662.252.8828
Text: 662.420.4891

Premium Discrete Breather System Twin Cam & M8 Touring Softail Dyna

Availability: In stock
Manufacturer: DK Custom Products

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Premium Discrete Breather System Twin Cam Touring Softail Dyna DK Custom Harley Davidson High Flow EBS Outlaw M-8 Milwaukee-Eight Stage I Trike Tri Glide Freewheeler


& Flexible Breather System




DK Custom Products



  • Fits All Outlaw & Many Other Air Cleaner Systems
  • Banjo Fittings at Heads for a Clean Look
  • Allows Discrete Placement of the supplied filter
  • Chrome Washable Reuseable Filter - flexible placement
  • 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 Stainless Steel Braided Hose
  • Optional Chrome Hose Clamp Covers
  • E-Z Install ~ Step-by-Step Instructions Included


In the picture below you can see one of many different places you can affix the filter.  Please look at the additional pictures at the bottom to see how discrete this external breather system is.


An external Breather Kit 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 air!

E-Z Install

Fits All Twin Cam & Milwaukee-Eight Models - 2000-Up Touring & Softail, 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.  If you A/C uses a backplate that bolts into the heads, this will not fit.  You will need to use the Breather Bolts or standard Discrete System to allow you to route the hot oily air outside your combustion chambers.

Does not work with OEM, Screamin Eagle, most S&S, Arlen Ness, Roland Sands , etc... If you have questions about fitment, please email with a photo, link, or part number of the air cleaner on your bike.

There are Optional Stainless Steel Braided Hose (more details HERE) & Chrome Hose Clamp Covers (more details HERE) if you prefer that look to the Black Hose and plain hose clamps or zip ties.

In some of the pictures below the Optional SS Braided Hose is pictured, as well as the Chrome Hose Clamp Covers.  These are not included in the kit unless you opt to include them when ordering.

Filter may, or may not, have a small loop in it.  This does not affect the aesthetics or installation choices.


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

Easy to install Review by B in NC
This was super easy to install. Could it be done cheaper if you DIY? Yes, but this takes the headache and hassle away from having to hunt the parts down individually, and not getting the right size, or getting something that just doesn't fit right. More than enough hose to put it where you want it. Well done DK! (Posted on 9/7/2021)
A definite plus Review by TechTeacher
Simple yet functional design. I always worried about the Harley implementation of this issue but DK has taken this to a new level. So easy to install. I should have gotten the chrome clamps for that true custom finish. (Posted on 4/7/2021)
Quality product Review by TBull
I called in & asked some questions about the external breather system & they suggested the premium version for better looks. I’m glad I payed a little extra to get the nicer breather bolts.
Easy install. (Posted on 3/13/2021)
A must have upgrade Review by Nicholas
I can’t believe how much oil has been blown over my bike this 20K miles. Only 250 miles since the install, which was super easy, and not a drop of oil to while away. Not too mention my response has increased and I feel more power. No more oil soaked air filter! (Posted on 12/22/2020)
Great idea...Love what it does...makes perfect sense Review by Donny
I installed this and the 606 air cleaner on my trike flrt last Sunday...I got the polished aluminum Finned cover which was recommended by Dwayne...I can hear this thing sucking clean air into my motor and bike seems to be faster off the line and freeway speeds...The polished cover looks fantastic and I am really into DK products for the long haul...Thanks to Dwayne and the rest of the gang...donny lovette (Posted on 8/25/2020)
2020 Road Glide Special Air Breather System Mod Review by Chief J
Installed to eliminate hot, oily crankcase oxygen depleted air from the intake. Cleaner M8 114 cubic inch motor, cleaner intake, and cleaner valves/pistons. Improved air/fuel mixture & combustion. (Posted on 5/19/2020)
Clean cool air Review by Cheese
Installed on my 06 electraglide. No more oil to wipe out of the air filter and intake. Finally a solution to the hot air and oil issues. (Posted on 1/5/2019)
Easy Install - Clean Breather Now Review by Steven
Just installed this on my 2018 Fat Bob. Easy to install. Cooler and cleaner air going in now. (Posted on 12/28/2018)

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