FMF Factory 4.1 RCT MegaBomb Carbon Fiber&Stainless Steel KX450F 19-20 Complete System

Compatible models:

KAWASAKI KX 450 2021-2021.

KAWASAKI KX 450 F 2019-2020.

KAWASAKI KX 450 X Cross Country 2021-2021.

Factory 4.1 RCT Exhaust System.

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology™ both internally and externally.

Shorter overall length that is less susceptible to crash damage and complementary to FMF´s 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.

Massive Power gains throughout the RPM range.

Huge weight savings.

New RTS (Rapid Tuning System).

Includes MegaBomb header.

Includes spark arrestor screen insert.

Includes quiet insert.


Many bikes are equipped with an exhaust valve controlled by a servo motor. When making performance changes involving the replacement of the exhaust or the installation of an additional control unit, it is necessary the elimination of the exhaust valve.

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