FMF is the leader in high performance quiet technology and our Q4 is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you dont need to hear the power, just feel the power.
Developed over years of championship off-road racing
Max Sound output 96dB; most models below 93dB
Constructed from aircraft grade aluminum and high strength stainless steel
Use with FMF or Stock OEM Header
Removable spark arrestor included
Note: For Closed Course Competition Use Only. Not Intended for Street Use.
Included Items: (1) Aluminum muffler with stainless steel mid-pipe and endcap
(1) 6mm-1.00 x 50mm flange head bolt
(1) Aluminum spacer
The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.