Runs well, sounds like a Harley, extremely fast but you could also putt around the yard at 2 mph. It has some mods, extra large pistons, custom pipe and  exhaust and that is all I know because I bought it from someone else he did the work but it runs great. I've been doing oil changes and changed air filter and have brought it in about four times in the last two years. I did crash it and the back fender will need to be replaced if your planning on racing or riding wreck less, the end of the pole holding the plastic is punched threw about a half inch but if your just riding for fun it would be fine you can hardly notice it and wouldn't effect riding. The paint around the bottom is scrapped off and is a bit of an eye soar, it doesn't look the best but it run's well. If your serious about buying we could Skype and I'll start it up and stuff or I could take more pictures. I'm only selling because I can't afford it anymore, believe me this things awesome.