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FMF Racing Q4 Slip-On Muffler is the next evolution in off-road exhaust for ATV applications. This muffler utilizes high-performance quiet technology that keeps the noise level to a minimum without power loss. The Q4 boasts intricate chambers, baffles, and proprietary multistage packing material to deliver the best performing quiet muffler in the market today. With the Q4 slip-on muffler, you don’t need to hear the power, just feel the power! FMF Racing Q4 Slip-On Muffler is proudly made in the USA.