Rzr 1000XP newbie

Hi all,
I just purchased a 2014 Rzr 1000 XP two weeks ago with 615 miles. Went riding last weekend in Southern Indiana area and loved it.

I joined the forum to learn about the machine, latest/best accessories, and technical issues. Speaking of technical issues, I noticed the machine does not want to run faster than about 64 mph at about 8800 RPM. I know the machine should do more than that speed. The machine was bought from a private owner and it was absolutely immaculate. We took pieces off to look for mud evidence and could find none. It could have been abused but it sure didn’t look like it. The owner did state they put a more robust belt on it after getting it and gave me the old belt which looks brand new. Wonder if they did something installing the belt that would cause it to run slower? Machine seems to have killer power on the low end and don’t notice anything such as slippage but again I’m a newbie. Any advice welcome.

I look forward to participating and maybe one day giving good advice.
Rick