MUFFLER Q4 SA YZ/WR450 Inner Liner Kit YFM450 Grizzly IRS 07

YFM450 Grizzly IRS 07

Rubber knurled locking nuts to provide grip and reduce finger fatigue

95-97 Kawasaki GPZ 1100

Adjustable zero set point for direct scale reading (no subtracting required)

XR400R 96-99

MUFFLER Q4 SA YZ/WR450 Inner Liner Kit YFM450 Grizzly IRS 07Q4 Slip On Muffler 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 NOTE: Will not pass 2025 FIM sound regulation Specification Model: Q4