- 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 and WR/YZ450FX series muffler combines advanced engineering with premium materials to deliver superior performance and durability. Crafted from a proprietary blend of aerospace-grade titanium, this muffler features a striking blue anodized finish with a carbon fiber end cap, offering both aesthetic appeal and corrosion resistance. The Factory 4.1 RCT incorporates FMF's latest Resonance Chamber Technology™ internally and externally, optimizing exhaust flow for increased power gains across the entire RPM range. Its compact design reduces overall length, making it less vulnerable to crash damage and better suited for aggressive riding styles. The muffler's design positions it closer to the engine, centralizing mass for improved handling and balance, aligning with FMF's Factory Forward Engineering philosophy.
Features:
- Constructed from aerospace-grade titanium for maximum strength and lightweight performance
- Blue anodized titanium muffler with durable carbon end cap for aesthetic appeal and corrosion resistance
- Incorporates FMF Resonance Chamber Technology™ internally and externally to optimize exhaust flow
- Shorter overall length enhances durability against crash damage and improves maneuverability
- Centralized muffler placement for balanced handling and better weight distribution
- Includes Rapid Tuning System (RTS) for quick and precise adjustments to optimize performance
