K&N Replacement Air Filter DUC ST2 / ST3 / ST4 (97-'07) Category_Carburettor & Fuel Pump Tools (x1) 7/8" Mounting Band

(x1) 7/8" Mounting Band

Steel construction ensures durability

Best quality OTK clamps

On bikes that have a regulated thermostatically controlled harness (this includes all new KTM and Husqvarna EFI 2 strokes) you will need to install an extended wire harness (sold separately) back to the battery and attached the fan kit to that wire harness

Energy efficient

K&N Replacement Air Filter DUC ST2 / ST3 / ST4 (97-'07) Category_Carburettor & Fuel Pump Tools (x1) 7/8" Mounting BandK&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. Features: Designed to provide increased horsepower and torque. Pleated media provides a large filtration area offering long service intervals. Multiple