The RS-2 is a potent and versatile design that evolved from Yoshimura's original TRC, engineered to provide increased power and power delivery. With a different pyramidal shape that features increased volume, the RS-2 is a quieter system with a larger core - and it offers the added bonus of outstanding performance in a value-priced package. Diamond-shaped sleeve. Large core and increased muffler packing volume means quieter operation. Stainless steel cone end-cap. CNC mandrel-bent polished 304L stainless steel tail pipe. U.S.F.S. approved spark arrestor included.