MUFFLER Q4 SA YZ/WR450 Insert It is durable

It is durable

Our most popular 2-stroke pipe

Hydration side port (with optional hands-free kit)

Raglan sleeve for ease of movement

MUFFLER Q4 SA YZ/WR450 Insert It is durableQ4 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