- The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound
- Less mass to enhance power-to-weight ratio
- Quiet power with minimal sacrifice for performance
- Developed over years of championship off-road racing
- Twin-stage core design for lower sound output and extended life of packing material
- Comes standard with spark arrestor
- FITS - 2003-2006 Yamaha WR 450 F, 2003-2005 Yamaha YZ 450 F