The piston is .80 over making a raptor a 686. The piston was used about six months and the cam was used about three. They are in good condition and it does not look to be a lot of wear on them. For the spec on the cam go to www.webcamshafts.com. The cam is a very strong all around cam with pretty good top end. It made a big difference in the way my bike performed compared to the 696 697 grind web cam that I had before.If you are interested call me at 252-431-1801 ask for slim and if I'm not there maybe you could leave me a contact number;this way we could arrange something. The only access to the internet is here at work and this is my last night working this week. So give me a call. Thanks'SLIM.