FMF Racing Yamaha YZ250F 19-25/YZ250FX 20-25 AL F 4.1 RCT R. Carbon Cap Comp Sys w/ SS MB Header/MID

When you're looking to get the most out of your Yamaha YZ250F or YZ250FX, especially for track days or competitive riding, upgrading the exhaust is a key step. This FMF Racing Factory 4.1 RCT system is built to give your bike a serious boost in performance across the entire RPM range.

FMF builds this system using their proprietary blend of aerospace-grade titanium for the muffler body, which is then anodized blue for a sharp look. It features a carbon fiber end cap, adding a touch of high-end finish. The Resonance Chamber Technology (RCT) is integrated both internally and externally to help manage exhaust pulses and improve power delivery. A notable design feature is its shorter overall length, which not only looks good but also helps protect the muffler from damage during a tip-over. FMF also moves the muffler closer to the motor, a technique they call Factory Forward Engineering, to centralize mass and improve the bike's handling characteristics. This entire system is manufactured 100% at FMF's Southern California factory, ensuring close attention to detail.

This exhaust system is designed to offer significant power gains throughout the RPM range, and it includes FMF's Rapid Tuning System (RTS) to help you fine-tune performance. The system comes complete with a stainless steel header and mid-pipe, making it a full system replacement for your stock exhaust.