DK Custom

4 Stage Catch Can for External Breather System EBS Harley



Color: Black
Only 4 units left

4 Stage Catch Can for External Breather System

At Motorcycle Innovations we always look for products that are unique and innovative, and often stress Function over Form. With this in mind we carry many of the quality products from DK Custom that serve this purpose. We support two fundamental and functional aims when it comes to making your Harley Davidson last!



FIRST - Cool Down your Ride!

These are the ways to do that!


  • Gas Tank Lift

  • Cooling Deflector Wings

  • Oil Filter Relocation 

  • Permanent Oil Filter

  • Oil Cooler


SECOND - Smart Performance Mods

Combine the following mods on your H-D for Improved Performance You Can Feel!


  • Outlaw HiFlow Air Cleaner

  • External Breather System

  • Tuner

  • Free Flowing Exhaust(Modified Stock OR Aftermarket)

  • Thunder Torque Inserts™

  • Gas Tank Lift

  • Cooling Deflector Wings

  • Oil Filter Relocation Kit

  • Permanent Performance Oil Filter

  • Oil Cooler

Now..... on to the Catch Cans!!



Perfect for DK Custom Products 

Discrete & Premium Discrete

External Breather Systems

Made in The USA!




  • Black or Polished CNC-Machined Aluminum

  • Vented Cap

  • 4 Stage Internal Filtration System

  • 1 Extra O-Ring

  • 1 1/2" Diameter 2 5/8" Tall

  • Hose barb for 3/8" ID hose (same as hose barbs on EBS)

  • Made in the USA!


Hundreds of hours of research and thousands of miles of riding have resulted in this 4 Stage Catch-Can that allows air to pass through but keeps the oil and water in the Catch-Can on typical Harley's.  

See the photo's of the 8 different components that make up the 4 Stage System.  Even with the worst spitters most of the water and oil stays in the Catch-Can!


Designed for the hot, oily, watery, oxygen-depleted air to pass thru the tube, exiting near the bottom.


Most of the oil and water will drop into the low density foam.  The air, and some atomized water and oil hits the first separator, stopping some of the liquid, but allowing the air to continue on through the high density foam.  There are two more separators and two more pieces of high density foam that work at stopping the liquid, but let the air exit the vent holes in the cover.


Periodic emptying of the Catch-Can is easy.  Simply unscrew the can from the lid and dump it.


Cleaning of the foam and separators is not necessary, but easy to do if one wishes.


There is an extra O-Ring included, should the installed O-Ring get lost or damaged.

The EPA has required Harley to route hot, dirty, oily, oxygen depleted crankcase air back into the air cleaner compromising the performance & longevity of your engine. When using an External Breather System, your bike will run better and last longer.

This Catch Can is a nice option that will work with your Discrete or Premium Discrete Breather System.

It is already included in the External Breather System w/ Catch Can Harley Twin Cam & M8 that we sell.

Customer Reviews

Based on 1 review
Brent Walterhouse
Good quality

Good quality powder coating & internals. Will actually not know how well it works until spring.

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