Description
The FMF Factory 4.1 RCT Full System is a high-performance exhaust designed for the Honda CRF450X/RX (2021-2024). Constructed from a proprietary blend of alloy-grade titanium, it features a blue anodized titanium muffler with a carbon fiber end cap. Utilizing Resonance Chamber Technology (RCT), this system optimizes exhaust flow by increasing internal volume, enhancing power throughout the RPM range while reducing sound levels. The patented core and canister shape further improve performance and sound absorption. FMF’s Factory Forward Engineering centralizes mass, making the system more resistant to crash damage. The system includes a Titanium Megabomb header for additional power gains and an innovative rear end cap that allows for easy installation of tuning tip inserts or a spark arrestor. It meets AMA and FIM sound requirements and comes with a QuietCore 94 dB insert for noise reduction.
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