K & N Harley-Davidson Custom Air Filter Assembly RK-3909-1 Temperature Decals Provide more temperature stability than

Provide more temperature stability than silicon

clip-type (semi-press) masterlink optional

New Diamond Shaped Silencer Design (Carbon Fiber Cans with Carbon End Cap) designed to match the R1's body line

Polyester moisture performance material

Made to look like they came on the bike Machined aluminum tips each have a lasered Cobra logo

K & N Harley-Davidson Custom Air Filter Assembly RK-3909-1 Temperature Decals Provide more temperature stability thanOversized 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.