FMF Factory 4.1 RCT Stainless Steel/Aluminum Full System w/Carbon Tip (044477)

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$1,074.99
$867.79
(You save $207.20 )
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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.

  • 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..
  • Spark arrestor screen insert included
  • 94dB insert included
  • For closed course competition only
Compatible Vehicles
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2024 Yamaha WR450F
2023-2024 Yamaha YZ450F
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2023 Yamaha YZ450F Monster Energy Yamaha Racing Edition
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