Description
The FMF Q4 Muffler (Part Number 042321) is engineered for riders who demand a balance of power and quiet operation. Featuring advanced engineering, this muffler precisely locates baffles and chambers to optimize sound absorption, reducing noise levels without compromising performance. Its lightweight design enhances the power-to-weight ratio, making it ideal for off-road enthusiasts seeking efficiency and reliability. Developed over years of championship off-road racing, the FMF Q4 offers proven performance and durability in demanding conditions. The twin-stage core design minimizes sound output while extending the life of the packing material, ensuring consistent performance over time. Additionally, this muffler comes standard with a spark arrestor, making it suitable for various riding environments while maintaining safety and compliance standards.
Features:
- Advanced engineering to precisely locate baffles and chambers for sound absorption
- Less mass to improve power-to-weight ratio and overall efficiency
- Quiet power with minimal performance sacrifice
- Developed through years of championship off-road racing experience
- Twin-stage core design for lower sound output and longer-lasting packing material
- Includes a spark arrestor for safety and regulatory compliance





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