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FMF Racing

FMF Racing 26+ Yamaha YZ450F Factory Anod 4.1 RCT w/ Carbon Cap - Complete System w/ TI MB Header

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SKU: FMF044490

The Factory 4.1 RCT incorporates the latest in FMF Resonance ...Read more

Price:
$1,237.99 $1,374.99
12370 ENTRIES10X
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

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Product Details

Product Description
Part Numbers
Sizing & Fit
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.

This Part Fits:

Year Make Model Submodel
2026 Yamaha YZ450F Base
2026 Yamaha YZ450F 70th Anniversary Edition Base
2026 Yamaha YZ450FX Base
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.

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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