This product is vehicle specific. Click here to select your bike to ensure fitment.

FMF Factory 4.1 RCT Exhaust System Yamaha YZ250F 2019

$719.99 $989.99
$799.99 $1,099.99
Save $80.00 10%


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This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

FMF Factory 4.1 RCT Full Exhaust Yamaha YZ250F

The FMF Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, FMF has achieved a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering which moves the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from aerospace grade materials that meet FMF’s exacting specifications and is manufactured 100% in their Southern California factory.


  • Massive power gains throughout the RPM range
  • Huge weight savings over stock exhaust
  • RTS (Rapid Tuning System) for quick and easy track-side tuning
  • Removable spark arrestor included
  • Meets AMA and FIM sound requirements 
  • Quiet insert sold separately
  • 100% made in the USA


  • Stainless Steel / Aluminum / Carbon end cap 7.3 lbs
  • Titanium / Carbon end cap 5.4 lbs

This product is vehicle specific. Click here to select your bike to ensure fitment.

This Product Fits:

YZ250F 2019
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Product Style Item # Manufacturer Product # Availability
Stainless Steel/Aluminum/Carbon Fiber 1641404 044456 In Stock: Ships within 24 hours
Titanium/Blue Titanium/Carbon Fiber 1641405 044457 In Stock: Ships within 24 hours