Upgrade your sport quad with the FMF Q4 Slip-On Muffler, engineered with advanced acoustic technology to deliver quiet power with minimal sacrifice for performance.
Featuring durable stainless steel and lightweight aluminum construction with precise baffle and chamber placement, this muffler enhances your ATV's power-to-weight ratio while maintaining controlled sound levels.
Top Features: FMF Q4 Slip-On
The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound.
Designed with less mass to enhance your machine's overall power-to-weight ratio.
Delivers quiet power with minimal sacrifice for high-RPM engine performance.
Constructed with a durable stainless steel pipe and raw aluminum muffler body for rugged ATV endurance.
Please review the detailed compatibility data below to ensure an exact fitment match for your ATV before finalizing your purchase.
Fitment List
Year Range
Vehicle Brand
Vehicle Model & Sub-Model
2009-2026
Yamaha
YFZ450R
2010-2011
Yamaha
YFZ450X
Frequently Asked Questions
Q: Does this slip-on muffler include a spark arrestor? A: Yes, the Q4 series comes standard with an integrated spark arrestor for trail and off-road compliance.
Q: What materials are used in its construction? A: It features a lightweight raw aluminum muffler body paired with a durable stainless steel pipe and end cap.
Expert Pro-Tip
Expert Pro-Tip: Always inspect your exhaust packing regularly and service your silencer with high-grade replacement packing when decibel levels rise to maintain peak sound absorption and throttle response.
At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.
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