FMF Aluminum Factory 4.1 RCT (Slip-On) Carbon Fiber End Cap 2019-2022 Yamaha YZ250F / YZ250FX

FMF Aluminum Factory 4.1 RCT (Slip-On) Carbon Fiber Rear End Cap

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Fitment - 2019-2022 Yamaha YZ250F / 2020-2022 Yamaha YZ250FX 

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.

• RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
• Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
• FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage
• Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
• Compatible with stock header or FMF header
• Meet AMA and FIM sound requirements
• Quiet Core 94db insert included
• Spark arrestor included in muffler
• Made in the U.S.A.
• Spark Arrestor: Screen Insert (included)
• Quiet Insert: 94dB Insert (included)
• Weight: 5 lbs.