FMF Racing Q4 Muffler Part Number 045590 for Enhanced Exhaust Performance

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, part number 045590, is designed to improve the exhaust system of your motorcycle or ATV, delivering increased power and a more aggressive sound. Constructed with high-quality materials, this muffler ensures durability and reliable performance in demanding riding conditions. Its sleek design not only enhances the aesthetic appeal of your vehicle but also contributes to optimal airflow, reducing back pressure for improved engine efficiency. Installation is straightforward, making it an excellent upgrade for enthusiasts seeking enhanced exhaust performance.
Designed with precision, the FMF Q4 Muffler features a lightweight yet robust construction that withstands the rigors of off-road and motocross riding. The muffler’s internal baffle system is engineered to optimize sound levels, providing a deep, satisfying exhaust note while remaining compliant with noise regulations. Its compatibility with a range of models makes it a versatile choice for riders looking to boost their vehicle’s performance without sacrificing reliability. Whether you're looking for better throttle response or a more aggressive sound profile, the FMF Q4 Muffler delivers consistent results.
Invest in this high-performance exhaust component to enhance your riding experience, offering improved horsepower and torque across the RPM range. With its durable build and proven design, the FMF Racing Q4 Muffler is a smart upgrade for riders aiming to maximize their vehicle’s potential while maintaining quality and longevity.

Features:

• Constructed with high-quality materials for durability and performance

• Optimized internal baffle system for enhanced sound and airflow

• Lightweight design to reduce overall vehicle weight

• Easy to install with compatible models for versatile application

• Improves horsepower, torque, and throttle response