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FMF Racing 26+ Yamaha YZ450F Factory Alum. 4.1 RCT w/ Carbon Cap - Complete System w/ MB Header
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The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technologyâ„¢ 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.
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2026 | Yamaha | YZ450F | Base |
| 2026 | Yamaha | YZ450F 70th Anniversary Edition | Base |
| 2026 | Yamaha | YZ450FX | Base |
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