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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7
1 provides a refined power curve with strong gains across the entire RPM range
-Race-tested
Result is a flow increase of nearly 10%
you can choose between a moto or supercross version
FACTORY 4.1 RCT TITANIUM SL (Slip-On) 041509 YAMAHA-YZ450FX-2022 1 provides a refined powerThe 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
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