Description

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.

Husqvarna — FE 501 — (2020, 2021, 2022); Husqvarna — FE 250 — (2020, 2021, 2021, 2022); Husqvarna — FE 350 — (2020, 2021, 2022); Husqvarna — FE 450 — (2021, 2020, 2022, 2023); KTM — 500 XCF-W — (2020, 2021, 2022); KTM — 350 XCF-W — (2020, 2021, 2022); KTM — 450 XCF-W — (2023); Gas Gas — EC 350F — (2021); Gas Gas — EC 250F — (2021)