Introducing the YOSHIMURA RS-12 Signature Series Exhaust System, part number 218320S320, meticulously engineered for performance and style. After three years of rigorous development and testing with elite factory-sponsored athletes and dedicated engineers, the RS-12 is designed to elevate your dirt bike experience. This unique exhaust system features a stunning matte carbon fiber end cap and precision machined joints, setting a new standard in the market. Experience unmatched power, sound management, and tire clearance with the aggressive RS-12 profile. Features: * Aggressive Design: Asymmetrical RS-12 profile maximizes muffler volume, manages sound, adds power, and provides enhanced clearance for tire and brake caliper. * Precision Machined Joints: Utilizes precision machined joints for optimal performance and reliability. * Matte Carbon Fiber End Cap: Showcases a works-look matte carbon fiber end cap with intricate details and decal inlays. * Ease of Service: Innovative carbon fiber cap design simplifies servicing compared to other mounting designs commonly found in the industry. * Patent Pending Technology: Features a new patent pending Precision Taper Fit (PTF) insert ring for improved fit and function. * Tapered Inlet Design: Incorporates a tapered muffler body inlet design for enhanced airflow and performance.