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FMF Racing 4-Stroke exhausts are the result of intense research and development with the Factory 4.1 RCT muffler representing the superior performance of the FMF 4-Stroke line. FMF Racing Dirt Bike MX 4-Stroke exhausts make way for better starts, intuitive maneuvering on the trails without significantly adding to a dirt bike’s overall weight. For flawless performance in any Moto event, modify your ride with an FMF Racing Dirt Bike MX 4-Stroke exhaust system.
The FMF Hi-Flo header is the initial step in efficient, unhindered exhaust flow. Found in four-wheel vehicles and old motorbikes, Hi-Flo headers are known for their reliability and sturdiness. FMF's innovative and trademarked Powerbom lifts the bar in the level of exhaust performance. The action happens within the actual “bomb” that enables enhanced circulation from the engine’s power pulses, making use of Hi-Flo features. Additional tractability, extra torque and up to a 1.5 horsepower increase makes the Powerbomb header live up to its name in faultless exhaust performance. The FMF Powerbomb header is available in titanium and stainless steel.