Dirt Bike Mufflers

FMF Racing Yamaha XT250 08-21 Powercore 4 S/A Muffler - 044448

The PowerCore 4 was developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is useable and compatible with every style of riding. Aluminum construction and stainless steel Hi-Flo end...

FMF Racing 18-25 Yamaha YZ450F /YZ450FX 19-24 Anod TI Factory 4.1 RCT SO Muffler w/R. Carbon Cap - 044445

The 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...

FMF Racing 18-25 Yamaha YZ450F SS Aluminum 4.1 RCT S/O w/Carbon Cap - 044443

The Factory 4.1 exhaust system with the Powerbomb header is FMF's premier exhaust system. This system is perfect for the track or dunes, and is used by factory teams such as KTM, Epic Can-Am and Rath Racing. The Powerbomb header is made of durable...

FMF Racing Yamaha YZ450F 18-25/WR450F (2019)/ YZ450FX 19-24 Hex Q4 S/A Muffler - 044442

A 4-Stroke header system that incorporates FMF's patented Power Bomb module at a precise location in the initial stage of the header system; by positioning the "Bomb" at this key point, the expansion and contraction of exhaust sonics through the system...

FMF Racing Yamaha YZ450F 18-25/WR450F (2019)/ YZ450FX 19-24 Powercore 4 Hex Muffler - 044441

The PowerCore 4 was developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is useable and compatible with every style of riding. Aluminum construction and stainless steel Hi-Flo end...

FMF Racing Yamaha YZ450F 18-19/WR450F 19-20/YZ450FX 19 SS Megabomb Header w/Mid Pipe - 044439

The ultimate power boost, the MegaBomb Headers improve performance along the bottom and mid-range powerband. Patented FMF technology combines the benefits of a longer header, with top end peformance of a shorter header.This Part...

FMF Racing Honda XR80 86-90/ 93-00 XR100 86-00 Powercore 4 S/A Muffler w/SS Header - 040084

Race-inspired, price-point muffler made for maximum power output. Aircraft-quality extruded aluminum canister with stainless steel components.This Part Fits:YearMakeModelSubmodel1986-2000HondaXR100RBase1986-1990HondaXR80RBase