Yoshimura YOSHIMURA RS12 Signature Series Full LineRef : YO00064A / 1120494001

YOSHIMURA RS-12 Signature Series for Yamaha YZ450F: a complete exhaust system designed for motocross and competition. The RS-12 system combines a robust stainless steel header with an aluminum muffler body and a matte carbon end cap, providing a bold race look, easy maintenance, and a design focused on mass centralization.

• Asymmetrical RS-12 muffler: optimized capacity and integrated resonance chamber to control sound while preserving the usable range.
• Conical muffler inlet to move weight forward and assist in mass centralization without compromising space under the seat.
• Precision machined gaskets and Precision Taper Fit (PTF) ring for easy installation and removal of acoustic inserts and spark arresters.
• Matte carbon end cap protecting and dressing the end, designed for simplified maintenance compared to traditional "sandwich" mounts.
• Stainless steel for the header, aluminum for the body, and carbon finishes: durable assembly and racing aesthetics.
• Options: reconditioning kits, inserts, and spark arresters available.
• Designed and manufactured in the United States by YOSHIMURA US.

Compatibility: intended for Yamaha YZ 450 F (2020–2022 models). Product designed for factory-delivered motorcycles; additional accessories may prevent fitting. Homologation: circuit use only — not noise approved. Designed and tested for the American market, performance and fitting may vary by market.