Pretty good pipe for a mild build. You won't rev to the moon with this but it does give some nice mid range power. Better low end than a boss pipe, but doesn't seem to rev as high. Running it on a 70cc kstar 3 bearing e50 with 16mm sha, getting about 50mph downhill 15x40 gearing. I think this would be better suited for a 50cc kitted bike or stocker. *** FYI it is long and extends past the rear wheel, so if you like to ride wheelies it will scrape before u hit 12 oclock. Opt for the side bleed if this is a concern****
decent 
