Great exhaust! Put it on my 09' crf150, great performance. Also nice sound. If you aren't happy with it take out the spark arrester pipe with a alen wrench. SOUNDS AMAZING! Nice low bello. Brappp!
As the pioneer of quiet performance mufflers, FMF raised the bar again in 2007 with the second generation of Q series mufflers, the Q4.
Built from the ground up, the Q4 is a completely new design, engineered for maximum performance while maintaining a sound level at or near 93 dB on most models. The Q4 is the market leader for low sound / high performance. Less sound equals more ground.