Yoshimura RS-4 Exhaust Spark Arrestor Insert SA-13-K-1Dropping weight is one of the most efficient ways of improving lap times on the track. If you have a Yoshimura exhaust system, why not take weight savings to max with this lightweight aluminum muffler bracket? Aluminum muffler bracket kit is designed for use with Yoshimura exhaust systems only Replaces heavy, bulky stock units and provides a secure mount for your Yoshimura exhaust system Laser cut from high grade aluminum Powdercoat finish