Yoshimura Australia Exhaust System Yamaha YZ 450 F/X . WR 450 F.

Yoshimura RS-12 Stainless Full Exhaust System

The stock exhaust system on the Yamaha YZ450F set a high bar, but Yoshimura found a way to improve it. By optimizing tube diameter and length, the RS-12 exhaust system was engineered to maximize performance. The result is a significant 8% increase in max horsepower and an impressive 13% boost in max torque, delivering power gains across the entire RPM range.

The RS-12 system unlocks key power in crucial areas, particularly enhancing low and mid-range RPM performance without affecting the YZ450F’s handling characteristics. The added power transforms the riding experience, making testing and development an exciting process.

Proudly designed, developed, and manufactured in the USA, the RS-12 system represents Yoshimura's dedication to innovation and performance.

FEATURES

• Max HP Increase: +8%
• Max Torque Increase: +13%
• Power and torque improvements across the entire RPM range.
• Precision-engineered tube diameter and length for optimal flow.
• Enhanced low and mid-range RPM power without affecting handling.
• Machined joints at key tube junctions for a precise, clean fit.
• Built-in resonator chamber on the muffler for improved performance.
• Matte carbon fiber end cap for a sleek, high-end look.
• PTF low-volume sound insert for sound control and compliance.