FMF Racing Factory 4.1 RCT Exhaust System for Yamaha YZ450F (2023-2025) with Titanium Muffler and Carbon End Cap

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 Factory 4.1 RCT exhaust system is engineered to enhance your Yamaha YZ450F's performance with cutting-edge FMF Resonance Chamber Technology™ that optimizes sound and power output. Crafted from aerospace-grade titanium, this exhaust features a blue anodized muffler with a carbon end cap, combining durability with a sleek aesthetic. Its compact design reduces overall length, making it less vulnerable to crash damage and improving weight distribution by moving the muffler closer to the engine for better centralized mass. This design improvement results in more responsive handling and a more balanced ride, ideal for competitive riders and enthusiasts alike.
Constructed entirely in our Southern California factory, the Factory 4.1 RCT guarantees high-quality manufacturing standards. Its rapid tuning system (RTS) allows for quick adjustments to optimize performance across different riding conditions. The system delivers significant power gains throughout the RPM range, providing increased acceleration and top-end performance, all while maintaining a lightweight profile that doesn't compromise strength or reliability. The inclusion of proprietary alloy grade titanium ensures the exhaust remains corrosion-resistant, even in challenging environments, extending its lifespan and maintaining optimal performance over time.
Designed specifically for Yamaha YZ450F models from 2023 through 2025, including special editions such as the Monster Energy Yamaha Racing Edition and the 50th Anniversary Edition, this exhaust system is a perfect upgrade for riders seeking maximum power and durability. Easy to install, it seamlessly integrates with your bike’s existing components, giving you a competitive edge on the track or trail. Whether you are a professional racer or a dedicated enthusiast, the FMF Racing Factory 4.1 RCT combines innovative technology, lightweight construction, and superior craftsmanship to elevate your Yamaha YZ450F’s performance to new heights.

Features:

• FMF Resonance Chamber Technology™ for optimized sound and power

• Constructed from aerospace-grade titanium for durability and corrosion resistance

• Blue anodized titanium muffler with carbon end cap for a sleek look and longevity

• Shorter overall length to reduce crash susceptibility and improve handling

• Centralized muffler positioning for better weight distribution

• Rapid Tuning System (RTS) for quick performance adjustments

• Significant power gains across the entire RPM range

• Designed specifically for Yamaha YZ450F models from 2023 to 2025

• Manufactured in the USA with strict quality standards

Fitments:
2023 Yamaha YZ450F Base
2023 Yamaha YZ450F Monster Energy Yamaha Racing Edition Base
2023 Yamaha YZ450FX Base
2024 Yamaha WR450F Base
2024 Yamaha YZ450F Base
2024 Yamaha YZ450F 50th Anniversary Edition Base
2024 Yamaha YZ450FX Base
2025 Yamaha WR450F Base
2025 Yamaha YZ450F Base
2025 Yamaha YZ450F Monster Energy Yamaha Racing Edition Base
2025 Yamaha YZ450FX Base
2026 Yamaha WR450F Base
2026 Yamaha YZ450FX Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Units Per Sku: 1
Regular Stock: t