FMF Q4 HEX Slip-On Muffler for Yamaha — 044452

The FMF Q4 HEX Slip-On Muffler for Yamaha delivers a tangible performance upgrade with improved exhaust flow and throttle response across the RPM range, while leveraging FMF’s advanced quiet technology to keep noise to a minimum. The Q4 HEX uses intricate chambers, baffles, and proprietary multistage packing material to maximize flow while maintaining quiet operation, making it one of FMF’s most capable quiet mufflers for off-road bikes. Spark arrestor included and engineered to meet stringent sound regulations, with a rugged, durable build that shifts power without added weight. It’s designed to be lighter than stock, contributing to improved handling and reduced unsprung mass. Made in the USA, FMF backs this slip-on with a focus on longevity in demanding riding conditions. Designed for Yamaha four-stroke platforms in the YZ/YZFX/WR250F family, the 044452 configuration is compatible with models like the Yamaha YZ250F, YZ250FX, and WR250F in the 2019–2026 window, providing a straightforward slip-on upgrade for riders seeking a balanced, race-ready exhaust. Construction and aesthetics pair with performance: a compact, durable canister routed to a curved outlet, delivering FMF’s signature deep tone and aggressive character without excessive volume. This is an easy-install, dedicated-quiet exhaust upgrade that preserves Yamaha’s reliability while unlocking more responsive throttle and broader power delivery.

FMF is the leader in high performance quiet technology and our Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you don’t need to hear the power, just feel the power!

-Less sound equals more ground

-Meets USFS and FIM World Enduro sound regulations

-Power gains throughout the entire rpm range

-Spark arrestor included

-Pounds lighter than stock

-Rugged design for off-road endurance

-Only US manufacturer to offer dedicated quiet exhaust systems

-MADE IN THE USA

The FMF Racing Q4 Muffler for Yamaha offers high-performance exhaust flow designed to enhance your motorcycle's power output and overall efficiency. Built with precision engineering, this muffler is tailored for Yamaha models to deliver improved throttle response and a deep, aggressive sound. Constructed from durable materials, the FMF Q4 ensures longevity and consistent performance in demanding riding conditions. Its sleek design not only boosts performance but also complements the aesthetic of your Yamaha motorcycle, making it an ideal upgrade for enthusiasts seeking both style and function. Easy to install, this muffler is a reliable choice for riders aiming to optimize their bike's exhaust system.
Whether you're racing or cruising, the FMF Q4 Muffler provides a balanced blend of performance, durability, and sound quality. Designed with a focus on quality and precision, it adheres to strict manufacturing standards for consistent results. With its efficient design, this muffler helps maximize horsepower and torque, contributing to a more responsive ride. Invest in the FMF Racing Q4 Muffler to elevate your Yamaha motorcycle's exhaust system with a product built for serious performance and long-lasting durability.

Features:

• High-performance exhaust flow designed to improve power output

• Constructed from durable materials for longevity and resistance to harsh conditions

• Engineered to enhance throttle response and provide an aggressive sound

• Sleek design complements Yamaha motorcycle aesthetics

• Easy installation for a hassle-free upgrade