DK Custom Products

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

HiFlow 587 Air Cleaner System w/ Transparent Cover Twin Cam

Availability: In stock
Item #: DK-AC587-TRN-TC
Manufacturer: DK Custom Products

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HiFlow 587 Air Cleaner System w/ Transparent Cover Twin Cam DK Custom Harley Davidson Outlaw Air Cleaner Systems Complete EBS High Flow M-8 Milwaukee-Eight Softail Twin Cam Dyna  Touring Trike Freewheeler  Big Twin Stage I TBW Throttle By Wire

Outlaw HiFlow 587

Air Cleaner System


Touring~Softail~Dyna Twin Cam Models

~Complete High Performance System~

~Transparent Cover~

~Optional Rain Sock~

 ~Fits EFI & Carbureted~

MADE in The USA!

DK Custom Products



  • HiFlow 5 7/8" Genuine K&N Air Filter
  • Low Profile - best leg clearance
  • Support & Backplate Black Powder Coat Finish
  • Transparent Cover - Impact-Modified Acrylic
  • Your Choice of External Breathers (NO dirty air in engine)
  • All Hardware needed, including Stainless AND Brass Acorn
  • E-Z Step-by-Instructions Included
  • Made in The USA!


The Outlaw HiFlow 587 System will give your Twin Cam the Air it needs to Produce Maximum Power.  CLEAN AIR - No dirty air routed back in! 

This system is TURN-KEY.  It comes with everything needed to replace the restrictive stock air cleaner.

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

Genuine K&N Filter with Million Mile Warranty.

Filter is re-usable.  Simply wash, let dry, & apply oil.

Fits Carbureted & EFI Touring, Softail, & Dyna Twin Cam Models

This is a must for a Stage 1 Upgrade.


Included: Your Choice of Brass, Black or Polished Aluminum Breathers.  Or you can choose one of the Hose & filter Breather Systems for venting - The Traditional, the Discrete, or the Premium Discrete  To see full details on All these choicesClick HERE.  


 When choosing between the 6 Breather systems, it is helpful to know-


1.  All three Breather Bolt function the same, it is just a matter of which color you prefer.


2.  All three of the Hose and Filter Breathers function the same with the Outlaw Air Cleaners, it is a matter of which system you like the looks of the best.

 The Transformer™ is the Ultimate External Breather System, that Doubles as a Support Bracket and can be Transformed into an EPA (Emissions) Compliant System. It fits all Outlaw Air Cleaners.

This System comes with an Impact-Modified Acrylic Transparent Cover.  Looks Great Stock!  Gives new options for personalizing with paint, decals, emblems, etc. 

Some of the pictures show the backplate painted, and some show optional emblems and optional fasteners.  The color included in the system is black.

The Naked Cover comes with rubber cushioning for mounting, it is not shown in all the pictures below.

You can upgrade to the Outlaw HiFlow 587 Air Cleaner System without doing any dyno work or adding tuners IF you leave the stock exhaust in place.

This kit comes with both a Stainless and a Brass Acorn Fastener for the Cover. 

There is an Optional A/C Cover Fastener that you can add to your order below. 



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 below to get the correct backplate.

 If you have a 08-Up Touring Model and would like to hide the Ugly TBW Servo Motor CLICK HERE for a selection of Servo Covers.


The EPA has required Harley to route dirty, oily crankcase air back into the air cleaner compromising the performance of your engine. The Outlaw Breathers 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.


"The Naked Outlaw I have been testing for you guys has gotten more positive comments than any other mod on my bike!"  -Matt

Customer Reviews

Good but needs refinement Review by Skipper
overall this is a good quality kit the hardwares there, gasket,etc. the back plate is well made I’m happy with its robustness, it’s a well made kit for the price. My issues with this kit are small in reality, but bothered me enough to make comment. the stud for the cover is just a price of all thread threaded into a nut and relies on thread locker to keep it from going anywhere makes me nervous if I have to take it off on the side of the road that I’m gonna lose pieces. The clear cover I would like to see some kind of small recess on the filter side to center and seat the filter to like the back plate has. the clear cover looks to be cut with a water jet from a sheet of acrylic, but there didn’t seem to be any finish to it so it had peaks and valleys or “tool marks” and sharp edges/burrs. With the clear cover the rain sock does not properly fit around it, dont bother adding it if choosing the clear cover. (Posted on 3/3/2023)
Fits my bike and right leg perfectly Review by DJ
Haven’t ridden with it yet but it puts my right leg in a much better position than any other I’ve tried. Fits my carburetor perfectly as well. (Posted on 1/7/2021)

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