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FMF Factory Blue Titanium 4.1 Dual Exhaust System Honda CRF

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  • £1,549.99
  • Regular price £344.99
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FMF Factory Blue Titanium 4.1 Dual Full Exhaust System Honda CRF

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.

FMF 4.1 Silencer Features:

  • Available in Blue Anodized Titanium Mufflers 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 specifically to our standards.


This Megabomb header is possibly FMF's greatest engineering feat so far. The megabomb just bolts on to the OEM fittings and can give up to an extra 3BHP.

FMF Megabomb Features:

  • The header can also reduce the volume by up to 1.5dB.
  • Choose the unit that's used by many of the factory race teams!!!
  • This is used for a single sided exhaust system
  • Manufactured from titanium so extremely light compared to OEM.