DK Custom Products

Phone: 662.252.8828
Text: 662.420.4891
Email: [email protected]

Discrete Banjo Bolts, Banjo's and Washers for Harley Sportster & Big Twin Evo

Availability: In stock
Manufacturer: DK Custom Products

Harley Davidson Stealth External Breather System Sportster & Big Twin Evo DK Custom Outlaw air cleaner EBS Roadster  high flow M-8 milwaukee-eight softail twin cam dyna 72 48 Big twin evo nighster iron


Banjo Bolts, Banjo's and Washers



Sportster Models 1991- UP

Big Twin Evo's

DK Custom Products



  • Fits All Outlaw & Many Other Air Cleaner Systems
  • Banjo Fittings at Heads for a Clean Look
  • Made out of Alluminium 


These are replacement parts for the Preimum Discrete External Breather System that can be seen at this LINK.


E-Z Install

Fits Most Sportsters 1991 & Up (except XR1200)

Fits Big Twin Evo's

*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.


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

Pretty Bolts! Review by Skip
Let there be air! Breathing air, that is...
I am changing out the stock air box assembly for one of my own making, and opening up the breather bolts at the same time. By venting crankcase fuses elsewhere, less carbon builds up on the piston tops. 'Nuff said! Just do it! Pick one you like and install. Super easy, super effective. No more oily fumes gumming up the air filter or fouling up the combustion chamber. (Posted on 1/1/2023)

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