Exhaust

FMF Spring & O-Ring Kit Yz125 89-98 11315

For max low end boost!Electro-nickel plated for a non-chip finish that will not discolorHeavy-duty Torque pipe for late model 200cc and up and uses a heavy duty 18 gauge steel body to hold up to the rigors of off-road riding

Model specific viton rubber pipe o-rings, pipe to silencer coupler, and pipe springs

Yoshimura Rs-9 Exhaust Spark Arrestor Insert Replacement Part Sa-14-K

All new incorporating the latest in Resonance Chamber TechnologyPatented core shape lowers sound level while maintaining maximum power outputPatented canister shape increases internal volume for more sound absorbing materialPatented chamber design to...

Stainless heavy duty exhaust clamp for 4-stroke bikesMade of stainless steel for less corrosion than steel clamps

Building performance exhaust systems for the factory race efforts improves our research and development, which improves the overall performance of our products. Adapting technology we learn on the track to our consumer products is what makes the...

All new incorporating the latest in Resonance Chamber TechnologyPatented core shape lowers sound level while maintaining maximum power outputPatented canister shape increases internal volume for more sound absorbing materialPatented chamber design to...

FMF Rct Car Replacement End Cap Kit 40643

Extruded from aircraft 6060 T6 alloyCompletely repackableMaximum performance, minimum noiseFits stock pipes as well as aftermarket pipes

For an all-around power increase throughout the power range!All pipes are electro-nickel plated for a non-chip finish that will not discolor except the Factory pipe which has hand pounded welds and no coating—just like the works bikes

The original Pro Circuit Works pipe offers unparalled performance and power for every two-stroke application. Increased horsepower and torque gains will quickly be noticed across the entire rpm range. The unplated, oiled metal finish requires some...