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 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.
FITS - 2023 KTM 450 XCF-W, 2021 Gas Gas EC 250F, 2021 Gas Gas EC 350F, 2020-2023 Husqvarna FE 450, 2020-2022 Husqvarna FE 350, 2020-2022 KTM 350 XCF-W, 2020-2022 KTM 500 XCF-W, 2020-2022 Husqvarna FE 501, 2020-2022 Husqvarna FE 250
