FMF Factory 4.1 RCT Exhaust with SS Megabomb Header (045638)

Powerful, race-ready full-system exhaust that centralizes mass by moving the muffler closer to the engine, delivering sharper throttle response and stronger pull across the RPM band. The Factory 4.1 RCT blends FMF’s Resonance Chamber Technology inside and out with a shorter overall length to reduce crash risk while preserving peak performance.

Crafted from aerospace-grade materials and built entirely in FMF’s Southern California factory, this system pairs a natural aluminum can with a carbon fiber end cap and a MegaBomb header for optimized exhaust flow. The included MegaBomb header reduces backpressure and accelerates exhaust scavenging, translating to more horsepower and torque over a wide range.

• Header type: MegaBomb (stainless steel) for efficient flow and high-temp durability
• Body: natural aluminum can with carbon fiber end cap
• Resonance Chamber Technology for smoother power delivery
• Rapid Tuning System (RTS) for easier on-bike tuning
• Lightweight stainless-steel construction with corrosion resistance
• Designed for easy installation on Yamaha models; optimized for performance and mass centralization

With substantial weight savings and a compact design that minimizes crash damage, the FMF Factory 4.1 RCT is a proven upgrade for riders seeking tangible power gains, responsive throttle, and a professional, race-inspired 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 Natural Aluminum with Carbon Fiber End Cap

-Massive Power gains throughout the RPM range.

-Huge weight savings

-New RTS (Rapid Tuning System)

-FMF uses the highest quality proprietary blend stainless steel made especially to our standards.

The FMF Racing Factory 4.1 RCT with SS Megabomb Header is designed to deliver exceptional performance and durability for high-performance motorcycle exhaust systems. Constructed with high-quality stainless steel, this exhaust system offers corrosion resistance and long-lasting strength, ensuring reliable operation in demanding riding conditions. The Factory 4.1 RCT features a lightweight design that enhances power output and throttle response, making it ideal for competitive and recreational riders seeking improved acceleration and top-end performance.

The included SS Megabomb header optimizes exhaust flow, contributing to increased horsepower and torque across a broad RPM range. Its innovative design reduces backpressure, resulting in smoother power delivery and improved engine efficiency. The system is engineered for easy installation and compatibility with a variety of Yamaha models, providing a seamless upgrade for riders looking to enhance their bike's performance.

Designed with precision and durability in mind, the FMF Factory 4.1 RCT with SS Megabomb Header is a top choice for riders who demand high-quality exhaust components. Whether you're competing on the race track or enjoying rugged trail rides, this exhaust system helps unlock your motorcycle’s full potential while maintaining a sleek, professional look.

Features:

• High-strength stainless steel construction for corrosion resistance and durability

• Lightweight design to improve overall power-to-weight ratio

• Optimized exhaust flow with SS Megabomb header for increased horsepower and torque

• Enhanced throttle response and engine efficiency

• Easy installation with compatible Yamaha models