K&N Engineering Replacement Air Filter - E-3972

K and N developed and manufactures the only air filtration system of its kind
A high-flow, washable filter thats been proven, again and again, to be the finest in the world
Professional racers and mechanics worldwide rely on K and N air filters to protect their expensive engines
All K and N air filters have 1,000,000-Mile manufacturers warranty
Designed to provide increased horsepower and torque
Pleated media provides a large filtration area offering long service intervals
Multiple layers of woven cotton gauze media offers excellent filtration
Application specific base seal and sealing bead
Made in the USA for over 40 years
Washable & reusable, pre-oiled and ready to ride!
No-Hassle Lifetime Limited Warranty