Review on KAJIMOTOR Universal Motorcycle Exhaust Silencer by Josh Lewis

. Used on a 2001 Kawasaki ZX9R that had a baffled muffler. It sounded great, but there was a stutter at idle and mid-throttle. I knew it was running lean because of the plugs and no jet kit installed. I was hoping that the extra resistance and back pressure would help, and that is what is needed. It's fairly quiet now, got a lot better again at low-to-mid power and got rid of the stuttering at lower revs. Fits perfectly and is assembled in 5 minutes. I don't think I could have spent $8 better. It sounds like it should be on a great bike, and not all squeaks and smacks. Get one and you'll see that it will help with the noise and maybe solve a similar problem to mine.