How is it that a 600cc engine can beat your 800cc engine. I own a 1992 Polaris indy 650 rxl and lattely I have been disapointed. I maxed it out at 85mph! The guy I bought it from said he has clocked it at 94.5mph. And said there was still some left. I am really curios how fast a polaris indy 650 rxl is suppose to go!!!! It has 7,000 miles on it and hasn't had a tune up. So I am going to take it to a dealer for one. I checked cylinder compression and it seems perfect. What could be the problem or how fast is it suppose to go?