Yoshimura RS-12 Hybrid Exhaust System Yamaha YZ450F 2026

Yoshimura RS-12 Hybrid Exhaust System Yamaha YZ450F

Hit the track with the ultimate balance of durability, weight savings, and budget-friendly performance. The Yoshimura RS-12 Hybrid Exhaust System is engineered specifically for the Yamaha YZ450F, combining a rugged stainless steel header with a lightweight titanium and aluminum muffler. This strategic hybrid design sheds significant weight while delivering massive power gains across the entire RPM range—peaking at an impressive 9.3% increase in horsepower and a 9.6% boost in torque at 6,200 RPM. Featuring advanced header and muffler resonators to optimize your power delivery, this system features a precision machined joint that makes it even easier to install than taking your stock exhaust off.

Features:

• Strategic hybrid construction features a durable stainless steel header and a lightweight titanium/aluminum RS-12 muffler
• Delivers massive performance gains: +9.3% HP and +9.6% torque at 6,200 RPM
• Volume-specific header resonator and internal muffler front-cap resonator work together to optimize power delivery
• Significantly lighter than the stock exhaust system
• AMA and FIM 109dB sound regulation capable (with the optional INS-39-K insert)
• Precision machined joint ensures a quick, hassle-free installation
• Proudly engineered, developed, and built in Chino, California

Weight:

• Stock system: 9.4 lbs
• SS/AL/TI/CF RS-12 full system: 9.3 lbs