Yoshimura RS2 Street Exhaust System Suzuki Drz400Sm / Drz400S The Yoshimura Rs-2 full exhaust system comes equipped with updated muffler branding and spark arrestor already installed. This system delivers all the power you'd expect from Yoshimura's long racing heritage. Features Diamond shaped stainless steel exhaust sleeve Large core and increased muffler packing volume creates quieter operation Stainless steel cone end-cap Stainless steel header and tail-pipe U.s. Forest Service Approved spark arrester included