FMF RACING - 4.1 STAINLESS W/ALU MUF FULL EXHAUST SYSTEM - 044460 - YAMAHA 20-22 YZ450F / 21-23 YZ450FX / 21-23 WR450F

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, they achieve a shorter overall length that is less susceptible to crash damage and complementary to their 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 their exacting specifications and is manufactured 100% at FMF's Southern California factory.

Features:

• Available in Natural Aluminum with Carbon Fiber End Cap
• 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 their standards.

Fits the following models:

Yamaha

20-22 YZ450F

21-23 YZ450FX

21-23 WR450F

Mfg Part#

044461