Seller notes

The Q4 employs intricate chambers, baffles and proprietary multistage packing material With the Q4 you do not need to hear the power, just feel the power! Less sound equals more ground Power gains throughout the entire rpm range Spark arrestor included Pounds lighter than stock Rugged design for off-road endurance Made in the U.S.A. The Q4 employs intricate chambers, baffles and proprietary multistage packing material With the Q4 you do not need to hear the power, just feel the power! Less sound...

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