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K & N Harley-Davidson Custom Air Filter Assembly RK-3909-1

K & N Harley-Davidson Custom Air Filter Assembly RK-3909-1

$361.40 USD
$410.66 USD $361.40 USD
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  • Oversized black powder-coated aluminum backing plate provides solid mounting
  • Fits behind the OE air cleaner cover maintaining the factory appearance
  • Replaces the stock air filter and cleaner backing plate assembly
  • Washable, oversized K&N high flow air filter equals longer life
  • Dyno tuned velocity stack directs airflow to engine
  • Built in breathers replace external OE breathers
  • Guaranteed increase in horsepower
  • Does not include cover
  • Made in the U.S.A.
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