Yoshimura SOUND INSERT KIT RS-4 Muffler, 1.500" RING (INS-21-K)

Yoshimura is renowned for its Research and Development. But producing the finest exhaust systems in the world requires more than a big R&D department. Yoshimura is the leading manufacturer of exhaust systems because our commitment to R&D is matched by our dedication to uncompromising quality standards and our expertise in manufacturing pipes that meet those standards.