FMF YAMAHA YZ450F / YZ450FX / WR450F STAINLESS 4.1 RCT SLIP-ON EXHAUST

he 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.

The FMF Factory 4.1 slip-on exhaust is the same exhaust that professional racers use to bring home championships around the world. The technology in this slip-on exhaust cannot be found in any other exhaust. Since the Factory 4.1 slip-on exhaust is meant to be used for competition, FMF made this pipe ready to take to the track straight out of the box. 

FEATURES:

• Massive power gains throughout the RPM range
• Huge weight savings over stock exhaust
• Aluminium construction
• Stainless steel midpipe
• Carbon end cap
• RTS (Rapid Tuning System) for quick and easy trackside tuning
• Removable spark arrestor included
• Can be used with FMF or stock OEM Header
• 100% made in the USA

Weight:

• 2.35kg (5.2bs)