FMF

The Q4 employs intricate chambers, baffles and proprietary multistage packing material With the Q4 you donÆt need to hear the power, just feel the power! Less sound equals more ground Power gains...

The Q4 employs intricate chambers, baffles and proprietary multistage packing material With the Q4 you donÆt need to hear the power, just feel the power! Less sound equals more ground Power gains...

Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power lossWell under the 96db sound output on most machines to...

Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power lossWell under the 96db sound output on most machines to...

Developed over years of championship off-road racingMax sound output 96db; most models below 93dbPounds lighter than stockUse with stock or FMF headerBuilt-in spark arrestor includedEasy to repackNot...

The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound Less mass to enhance power-to-weight ratio Quiet power with minimal sacrifice for performance...

The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound Less mass to enhance power-to-weight ratio Quiet power with minimal sacrifice for performance...

Developed over years of championship off-road racing Twin-stage core design for lower sound output and extended life of packing material Comes standard with spark arrestor. MUFFLER Q4 XR650L

Developed over years of championship off-road racing Twin-stage core design for lower sound output and extended life of packing material Comes standard with spark arrestor. MUFFLER Q4 HEX KLX300R

Developed over years of championship off-road racing Employs intricate chambers, baffles and proprietary multistage packing material Max Sound output 96dB Constructed from aircraft grade aluminum and...

The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound Less mass to enhance power-to-weight ratio Quiet power with minimal sacrifice for performance...

The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound Less mass to enhance power-to-weight ratio Quiet power with minimal sacrifice for performance...