The FMF Q4 S/A silencer offers a low sound output, yet it still offers exceptional power gains. The Q4 silencer puts out 94db or less and also has a USFS approved spark arrestor with no screen to clean or screen to burn through. The FMF Q4 S/A silencer has more packing volume so you have longer time between repacking. So take the noise out of riding with the Q4 S/A silencer and not the fun.

Developed over years of championship off-road racing. Constructed with aircraft grade aluminum and high strength stainless steel.

Max sound output 96db, most models below 93db.

Comes standard with spark arrestor. Easily serviced for repacking.

Use with stock or FMF head pipe.