Yamaha YZ450F 2026-2026 FMF Factory 4.1 Complete Exhaust System w/Stainless Steel Header

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FMF Factory 4.1 Complete Exhaust System w/Stainless Steel Header

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.

Fitment Details

Yamaha YZ450F 2026

(MCL_6110083_1188)

SKU	MCL_6110083_1188
Barcode #	6110083
Brand	FMF

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