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K&N Filter Kit for 08-09 Harley Davidson Dyna Models Custom Assembly


  • Increases Horsepower
  • Increases Filtration
  • Washable and Reuseable Filter
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Pricing: $151.99


K&N's custom air cleaner assemblies are designed with the racer in mind. They incorporate good looks as well as the superior air flow that you expect from K&N. These custom air cleaner assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide more air flow than other assemblies of this type. Available in 4 different designs, the perfect assembly is sure to be found here. Each complete assembly co mes with base, element, and top plate.

Application List

2008-2011 Harley Davidson FXDB Dyna Street Bob

2008-2011 Harley Davidson FXDC Dyna Super Glide Custom

2008-2011 Harley Davidson FXDF Fat Bob

2008-2011 Harley Davidson FXDWG Dyna Wide Glide

2008-2010 Harley Davidson FXD Dyna Super Glide

2008-2010 Harley Davidson FXDL Dyna Low Rider


Height: 2.5 in (64 mm)

Replacement Filter: E-3975

Neck Flange: 2.4 in (61 mm)

Street Legal in All US States: No

Horsepower Gain: 6.54 HP @ 5100 RPM


  • RK-3931
  • RK-3931
  • K&N
  • New

Shipping Information

  • Item Requires Shipping
  • 3.1 lbs.
  • W9.5000” x H4.9000” x L11.8000”

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