K&N Replacement Air Filter (HA-3521)

K&N Replacement Air Filter (HA-3521)K&N's high flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle. Designed to provide increased horsepower and torque Pleated media provides a large filtration area offering long service intervals Multiple layers of

and modifies the signal before sending it to the ECU for an adjustable level of sensitivity

engine exhaust and grease from K&N filters

The restrictive factory air filter and air intake housing are replaced by the K&N Typhoon air intake which is designed to dramatically reduce air flow restriction as it smoothes and straightens air flow

K&N's custom air cleaner assemblies are designed with the racer in mind

The 5/8 inch diameter zinc tube is designed to push in and clamp directly on to metal or plastic tubing where venting is needed

and several wrenches

Can typically be installed in 90 minutes or less using standard hand tools

K&N Cartridge Oil Filters are designed to satisfy the needs of racers and engine builders as well as the average vehicle owner who wants the best oil filter available

5/16" hose barb

Great for aesthetics

K&N AirCharger Air Intakes replace the restrictive stock OE air cleaner with a K&N High-Flow Air Filter and mandrel-bent aluminum intake tube

The 1 inch diameter zinc tube is designed to push in and clamp directly on to rubber or plastic tubing where venting is needed