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Before You Buy an FMF Exhaust - Check This Out!

A #test between a stock 2022 #yamaha #yz450f exhaust and a #FMF 4.1 slip on exhaust. Sound comparison on and off the track, and my breakdown of the differences I saw and felt after riding months with the stock exhaust. My initial thought after riding a couple sessions with the FMF 4.1 is at the end of the video. Half way through There’s a back to back comparison on each of the test so I did. FMF Description: 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 Muffler with Carbon End Cap -Massive Power gains throughout the RPM range. -Huge weight savings -New RTS (Rapid Tuning System) -FMF uses the highest quality proprietary blend of alloy grade titanium made especially to our standards. #dirtbike #motocross #supercross #bikebuild #450f #dirtbikeexhaust