DK Custom Products

Phone: 662.252.8828
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Optimized 10 Gauge Inverted Black Air Cleaner Harley Twin Cam

Availability: Out of stock
Manufacturer: Arlen Ness/DK Custom

Optimized 10 Gauge Inverted Black Air Cleaner Harley Twin Cam DK Custom Touring softail Dyna  Trike Freewheeler Throttle by Wire cable Operated TBW Aftermarket Air Cleaners Optimized EBS (External Breather System) Ness Big Sucker Fuel Moto


w/ EBS

10 Gauge Inverted Air Cleaner System

Stage 1


Touring ~ Trike ~ Softail ~ Dyna

Twin Cam Models


 MADE in The USA!

AN/DK Custom



  • Forged Billet Aluminum Back Plate
  • Forged Aluminum Billet Black Anodized 10 Gauge Cover
  • Synthetic Air Filter Element Never Needs Oiling or Rain Sock
  • Modified w/ Hidden External Breather System for Top Performance
  • E-Z Step-by-Instructions Included
  • Lifetime Warranty
  • Made in The USA!


This Arlen Ness 10 Gauge Inverted Big Sucker Air Cleaner has been modified to work with the Included DK Custom  Premium Discrete Breather System or Complete Breather System .

The Included 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 system is TURN-KEY.  It comes with everything needed to replace the restrictive & longevity robbing stock air cleaner.  

E-Z Installation with Step-by-Step Instructions.

Manufactured in the USA by Arlen Ness and DK Custom Products, it has a Lifetime Warranty.

The Synthetic Filter is re-usable.  Simply wash & let dry.  NO oiling needed.

It is water resistant, eliminating the need for a rain sock.

This is a must for a Stage 1 Upgrade.

Check Out the Photo's Above!


This Air Cleaner System comes with your choice of an Optimized External Breather System (EBS) which you can see HERE.

For 103's, that build more crankcase pressure, the Premium Discrete External Breather System is recommended.  If you know that your bike does not have excessive oil passing through the breather bolts, the Traditional Complete Breather System is an option that is completely hidden behind the air cleaner.

You can see more on both of these External Breather Systems (EBS) at the links above.

There is also an option to get the Premium 4 Stage Catch-Can External Breather System, you can see it at this LINK.


We chose the 10 Gauge AN Air Cleaners to optimize because they are a great looking A/C, they have exceptional filter elements, and they cannot easily be converted to have an External Breather System (EBS).  

By modifying the 10 Gauge at our shop to accept an EBS, this great looking air cleaner is now also a Superb Air Cleaner System, both in Peformance & Engine Longevity.

It is also available in a Chrome Finish.  You can see it HERE.



2000-2015 Softail (cable operated throttle)

2016-UP Softail (Throttle by Wire TBW)

2000-Up Dyna (cable operated throttle)

2000-2007 Touring (cable operated throttle)

2008-Up Touring (Throttle by Wire TBW)

If you have a 2008-Up Touring Model or a 2016-Up Softail, it has Throttle by Wire (TBW) and you must check the TBW option above to get the correct backplate.

Note:  In Case you did not see the several times mentioned above, this fits TWIN CAM engines only, it does not fit Milwaukee-Eight engines.


The EPA has required Harley to route dirty, oily crankcase air back into the air cleaner compromising the performance of your engine. The External Breather System vents it without compromising the performance or longevity of your motor.

 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.

 Dyno Proven Increase of 8-12 Horse Power.


"I've wanted one of these air cleaners for quite a while, but won't run an A/C that recycles oil and spent air back into my engine.  Thank you for making these!"  -Steve

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