DK Custom Products

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

Polished Aluminum Cyclone HiFlow 587 Air Cleaner System Transparent HD M8

Availability: In stock
Item #: DK-AC587-PCY-M8
Manufacturer: DK Custom Products

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Polished Aluminum Cyclone Complete HiFlow 587 Air Cleaner Harley Milwaukee-Eight DK Custom Harley Davidson DK Custom Outlaw Touring Twin Cam Dyna Softail Trike Freewheeler Sportster Tri Glide Kury Kuryakyn Stage I High Flow M8 SE Heavy Breather

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Outlaw HiFlow 587

Air Cleaner System



~Complete High Performance System~


~Transparent Cover~

~Optional Rain Sock~


MADE in The USA!

DK Custom Products



  • HiFlow 5 7/8" Genuine K&N Air Filter
  • Low Profile - best leg clearance
  • Designed Specifically for the M8 Engine
  • Polished Aluminum Cyclone with Transparent Cover
  • Your Choice of External Breathers (NO dirty air in engine)
  • Includes All Needed Hardware
  • E-Z Step-by-Instructions Included
  • Made in The USA!


The Outlaw HiFlow 587 System will give your M8 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 Milwaukee-Eight Models.

This is a must for at 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 choices Click HERE.  


 When choosing between the 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 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.



This System comes with an Impact-Modified Acrylic Transparent Cover, Sandwiched between a Polished Aluminum Cyclone Cage. You can see it in Black at this LINK.  

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.



All Milwaukee-Eight Models

 For 114 models that have a Ventilator or similar A/C, you will need a support bracket, the HD Part # is 16400049 (it has a retail price of $13.49)

Harley routes 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.


""This is the A/C  I've been waiting for.  Way to go in making a killer looking high flow intake system at a reasonable price" -Tim

Customer Reviews

Well Made, Does The Job, Easy Install Review by Black Bart
Purchased this unit because it was the least expensive. Very well constructed, installed without the need of instructions, painted the clear disc black(matches the FXST all black bike). Doing an S&S cam chest install, so can't say if it adds a bit of HP. A quality product at the right price, and I've had them all. Been a biker for 60 years, I know of what I speak. (Posted on 8/1/2023)

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