Yoshimura RS-12 Hybrid Exhaust System Yamaha YZ450F 2026

Yoshimura RS-12 Hybrid Exhaust System Yamaha YZ450F

The Yoshimura RS-12 Hybrid Exhaust System delivers a perfect blend of durability and performance for the Yamaha YZ450F. Its construction includes a sturdy stainless steel header paired with a lightweight titanium and aluminum muffler. This hybrid configuration not only reduces overall weight but also enhances power output, achieving up to a 9.3% increase in horsepower and a 9.6% boost in torque at 6,200 RPM. Engineered with advanced resonators in both the header and muffler, this system facilitates optimal power delivery. Additionally, the precision machined joint allows for an easier installation process, making it a straightforward upgrade from the stock exhaust.

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