Designed by professional motocross and supercross racer, Ryan Vilopoto Features an aramid fiber silencer body, titanium tubing and end-cap with CNC-machined aluminum mounting bracket Offers a professional look and factory sound Increases power on the bottom-end for optimum performance gains For closed-course racing only Made in the U.S.A NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES