FMF Q4 Slip-On Muffler for Yamaha – Quiet Performance (Part 044232)

Experience championship-level quiet power with the FMF Q4 Slip-On Muffler for Yamaha. Built around a twin-stage core and FMF’s signature packing system, it reduces noise without compromising the aggressive, responsive feel riders expect from FMF’s off-road exhaust technology.

Max sound output is 96 dB, with most models tuned to even quieter levels in typical riding conditions. The muffler is crafted from aircraft-grade aluminum and high-strength stainless steel, balancing lightness with durability to withstand rugged trails and competitive racing environments.

Designed for Yamaha motorcycles, the Q4 slip-on can be paired with FMF headers or a stock OEM header for a seamless fit. A removable spark arrestor is included, making the system ready for off-road use where required and compliant with most trail regulations.

In terms of performance, the Q4’s optimized flow and reduced weight contribute to quicker throttle response and improved handling. The design minimizes backpressure while maintaining durability, translating to improved overall performance across a broad RPM range—whether you’re climbing technical sections or charging along open sections of track or trail.

Key benefits at a glance:

• Slip-on compatibility with FMF or OEM Yamaha headers
• Aircraft-grade aluminum and stainless steel construction
• Removable spark arrestor included
• Quiet performance with tuned power delivery
• Engineered for Yamaha motorcycles with a precise, seamless fit

FMF is the leader in high performance quiet technology and our Q4 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!

-Developed over years of championship off-road racing

-Max Sound output 96dB; most models below 93dB

-Constructed from aircraft grade aluminum and high strength stainless steel

-Use with FMF or Stock OEM Header

-Removable spark arrestor included

The FMF Racing FMF Q4 Muffler for Yamaha is engineered to enhance your motorcycle's performance and sound. Designed with precision, this muffler offers a significant upgrade over stock exhaust systems, providing improved horsepower and torque across a wide range of riding conditions. Crafted from high-quality materials, the FMF Q4 ensures durability and longevity, even under rigorous use. Its sleek design not only boosts performance but also adds a stylish touch to your Yamaha motorcycle. Installation is straightforward, making it an excellent choice for both amateur and professional riders seeking reliable exhaust performance.
Engineered with advanced muffler technology, the FMF Q4 reduces weight without sacrificing strength, contributing to better handling and maneuverability. The muffler's efficient flow design minimizes backpressure, which translates into more responsive throttle response and increased overall power. Whether you're hitting the trails or racing on the track, the FMF Q4 Muffler delivers consistent, high-level performance. Its compatibility with Yamaha models makes it a perfect upgrade for riders looking to optimize their vehicle's exhaust system and achieve a more aggressive sound profile.

Features:

• Designed specifically for Yamaha motorcycles for seamless fit and compatibility

• Constructed from durable, high-quality materials for long-lasting performance

• Improves horsepower and torque for enhanced riding experience

• Reduced weight for better handling and maneuverability

• Efficient flow design minimizes backpressure and boosts throttle response