FMF Racing Yamaha YZ450F 23-25 AL Factory 4.1 RCT w/ R. Carbon Cap Comp Sys w/SS MB Header/Mid Pipe

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory.

• Highest-quality proprietary blend of alloy grade titanium
• Blue anodized titanium muffler with carbon end cap
• Massive power gains throughout the RPM range
• Rapid Tuning System (RTS)

The FMF Racing Yamaha YZ450F Factory 4.1 RCT exhaust system is engineered for high-performance motocross and off-road riding. Incorporating advanced FMF Resonance Chamber Technology™, this system delivers significant power gains throughout the entire RPM range, making it ideal for competitive riders seeking maximum acceleration and top-end speed. Constructed from aerospace-grade titanium, the muffler features a durable blue anodized finish with a carbon fiber end cap, providing both lightweight strength and a sleek aesthetic. Its shorter overall length reduces vulnerability to crash damage and aligns with Factory Forward Engineering principles by positioning the muffler closer to the engine, which helps centralize mass and improve handling. The Rapid Tuning System (RTS) offers quick and easy adjustments, allowing riders to fine-tune their exhaust setup for various riding conditions and preferences. Designed specifically for Yamaha YZ450F models from 2023 to 2025, including special editions like the Monster Energy Yamaha Racing Edition and the 50th Anniversary Edition, this exhaust system ensures optimal fit and performance. Manufactured entirely in Southern California, FMF’s meticulous craftsmanship guarantees high quality and reliability for serious riders seeking an edge on the track or trail.

Features:

• FMF Resonance Chamber Technology™ for enhanced power across all RPM ranges

• Aerospace-grade titanium construction for lightweight durability

• Blue anodized titanium muffler with carbon end cap for style and longevity

• Reduced overall length to minimize crash damage and improve handling

• Factory Forward Engineering design for centralized mass

• Rapid Tuning System (RTS) allows quick adjustments for optimal performance

• Fits 2023-2025 Yamaha YZ450F, YZ450FX, WR450F, and special editions

Fitment:
Yamaha WR450F Base 2024
Yamaha WR450F Base 2025
Yamaha YZ450F Base 2023
Yamaha YZ450F Base 2024
Yamaha YZ450F Base 2025
Yamaha YZ450F 50th Anniversary Edition Base 2024
Yamaha YZ450F Monster Energy Yamaha Racing Edition Base 2023
Yamaha YZ450F Monster Energy Yamaha Racing Edition Base 2025
Yamaha YZ450FX Base 2023
Yamaha YZ450FX Base 2024
Yamaha YZ450FX Base 2025