K&N Replacement Air Filter YZF-R1 '07–'08 SIZE_6 OEM chrome-plated steel and aluminum

OEM chrome-plated steel and aluminum pistons are prone to corrosion

Based on internal tests at Japan provi

Higher pressure radiator cap increases the boiling point of your coolant to reduce boil-over problems on your motorcycle or ATV

All sizes will work for front or rear fitment

19mm - Yamaha

K&N Replacement Air Filter YZF-R1 '07–'08 SIZE_6 OEM chrome-plated steel and aluminumK&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