FMF RACING 4.1 STAINLESS SLIP ON SILENCER - 044443 - YAMAHA 18-25 YZ450F / 19-25 YZ450FX / 19-25 WR450F

Mfg Part#-044443

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

Features:

-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 especially to their standards

-Can be used with FMF or Stock OEM Header

Specifications:

-Notice: Closed Course Use Only

-Type: Slip-On

-Configuration: Single

-Muffler Construction: Aluminum

-Finish: Natural

-Midpipe: Stainless Steel

-End cap: Carbon

-Spark Arrestor: Screen Insert (included)

-Quiet Insert: 94dB Insert (included)

Fits the following models:

Yamaha

23-25 YZ450F

24-25 YZ450FX

24-25 WR450F