FMF Racing Q4 HEX Slip-On Muffler for Yamaha 044442

Powerfully quiet, the FMF Q4 HEX muffler for Yamaha (044442) blends advanced flow technology with smart sound insulation to deliver measurable gains across the RPM range. Its multi-chamber design and integrated packing are engineered to reduce back pressure while maintaining a refined exhaust note that won’t drown your ride.

The Q4 HEX is built around intricate chambers, baffles, and proprietary multistage packing material—together forming FMF’s recognised quiet performance platform. The result is enhanced throttle response and smoother power delivery without compromising durability or sound compliance.

Designed specifically for Yamaha motorcycles for a precise fit, this slip-on includes a spark arrestor and uses a lightweight, corrosion- and heat-resistant build. It’s engineered to be lighter than stock, helping to improve handling and agility during aggressive riding or competitive environments.

Whether you’re racing or riding recreationally, the Q4 HEX slip-on is ready to upgrade your Yamaha’s exhaust efficiency while meeting sound regulations. Made in the USA, it embodies FMF’s commitment to durability, performance, and American craftsmanship.

• Designed specifically for Yamaha motorcycles for a perfect fit
• Improves exhaust flow for better horsepower and throttle response
• Constructed with durable, corrosion- and heat-resistant materials
• Lightweight design enhances bike handling and maneuverability
• Includes spark arrestor; meets USFS and FIM World Enduro sound regulations
• Easy to install with FMF’s precision engineering
• Rugged, off-road-ready construction; MADE IN THE USA

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

Enhance your Yamaha motorcycle's performance with the FMF Racing Q4 Muffler, part number 044442. Designed for optimal exhaust flow and durability, this muffler provides improved power output and a smoother ride. Its high-quality construction ensures longevity and reliable operation in various riding conditions. The FMF Q4 Muffler features a lightweight design that minimizes weight without compromising strength, helping to boost overall motorcycle agility and handling.

Manufactured by FMF Racing, a trusted brand in motorcycle exhaust systems, this muffler is engineered for precision fit and easy installation. Its sleek appearance complements your bike’s aesthetic while delivering superior exhaust efficiency. Whether you're racing or enjoying recreational riding, the FMF Q4 Muffler helps optimize your Yamaha’s performance by reducing back pressure and enhancing throttle response.

Built with quality materials, the FMF Q4 Muffler offers excellent resistance to corrosion and high temperatures, making it suitable for aggressive riding and long-term use. This muffler is an ideal upgrade for riders seeking to maximize their Yamaha's power and sound output. Upgrade your motorcycle with the FMF Racing Q4 Muffler and experience a notable improvement in performance and exhaust note.

Features:

• Designed specifically for Yamaha motorcycles for perfect fit

• Improves exhaust flow for better horsepower and throttle response

• Constructed with durable, corrosion-resistant materials

• Lightweight design enhances bike handling and maneuverability

• Easy to install with precision engineering from FMF Racing