SKU:357891
This is a complete Factory 4.1 RCT full system for Yamaha motorcycles, built from aerospace-grade titanium and manufactured 100% in FMF’s Southern California factory to deliver race-ready power with minimized weight.
The system integrates FMF Resonance Chamber Technology™ both internally and externally, optimizing exhaust flow and pulse dynamics across the RPM range for stronger, more consistent power delivery.
Its shorter overall length reduces vulnerability to crash damage while centralizing mass by moving the muffler closer to the engine, a design principle FMF calls Factory Forward Engineering.
The muffler features a blue anodized titanium canister with a blue carbon fiber end cap, delivering the Factory look you want without compromising performance.
Key performance tech includes Megabomb header technology, a Hi‑flo performance Core, and RTS (Rapid Tuning System) for fine-tuning fitment and responsiveness. These elements work together to improve throttle response and overall horsepower/torque across the rev range.
Designed for straightforward, direct bolt‑on installation, the Factory 4.1 RCT includes all necessary mounting hardware and is built to withstand demanding riding conditions while maintaining a refined exhaust note suitable for competition or trail riding.
Developed with Championship winning Factory STAR Racing Yamaha, the Factory 4.1 Titanium Systems delivers unmatched power, reduced weight and the signature FMF Factory look.
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.
Available in Blue Anodized Titanium Muffler with Blue Carbon Fiber End Cap
Massive Power gains throughout the RPM range
Lightweight design
New RTS (Rapid Tuning System)
Megabomb header technology
Hi-flo performance Core
Improved throttle response
Direct bolt-on installation
FMF uses the highest quality proprietary blend of alloy grade titanium made especially to our standards
Upgrade your Yamaha motorcycle with the FMF Racing Factory 4.1 RCT exhaust system, designed to enhance performance and sound. Crafted by FMF Racing, a trusted name in motocross and off-road exhaust systems, this model offers a significant boost in power and responsiveness. Built with high-quality materials, the Factory 4.1 RCT ensures durability and longevity even under demanding riding conditions. Its sleek design not only improves exhaust flow but also complements the aesthetic of your Yamaha bike, making it a perfect choice for riders seeking both style and performance.
Designed for easy installation, the FMF Factory 4.1 RCT features a lightweight construction that reduces overall bike weight for better handling. The exhaust system is engineered to optimize exhaust flow, resulting in increased horsepower and torque across the RPM range. Whether you're racing or enjoying trail rides, this exhaust system offers noticeable improvements in throttle response and acceleration. Backed by FMF Racing's reputation for quality and innovation, the Factory 4.1 RCT is a reliable upgrade that can elevate your riding experience.
Constructed with precision, the FMF Factory 4.1 RCT includes all necessary mounting hardware for straightforward installation. Its robust build ensures resilience against harsh riding environments, while the advanced design helps in reducing exhaust noise to meet sound regulations without compromising performance. With a focus on both form and function, this exhaust system is an excellent investment for Yamaha riders looking to maximize their bike's potential.
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