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 - 2022-2023 Gas Gas MC 350F, 2021-2023 Gas Gas MC 450F, 2021-2023 Gas Gas MC 250F, 2021-2023 Gas Gas EX 350F, 2021-2023 Gas Gas EX 250F, 2021-2023 Gas Gas EX 450F, 2019-2022 Husqvarna FC 250, 2019-2022 Husqvarna FC 450, 2019-2022 Husqvarna FC 350, 2019-2022 KTM 250 XC-F, 2019-2022 KTM 450 XC-F, 2019-2022 KTM 450 SX-F, 2019-2022 KTM 250 SX-F, 2019-2022 Husqvarna FX 450 2019-2022 Husqvarna FX 350,2019-2021 KTM 450 SX-F FE, 2018-2022 KTM 350 XC-F, 2018-2022 KTM 350 SX-F
