FMF Q4 HEX Muffler YZ450F 044442 kit

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Q4 HEX Muffler The Q4 employs intricate chambers, baffles and proprietary multistage packing material, With the Q4 you don’t need to hear the power, just feel the power!, Less soun d 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. 2019-2025 Yamaha YZ450FX - - 2019-2024 Yamaha WR450F - - 2018-2026 Yamaha YZ450F Show more