I have a 1992 Honda TRX250X. It has never had any work done to it other then I put a Big gun exhaust on it last year. I was thinking about rebuilding the motor. It still runs perfect but it is 11 years old I figure it might be time for a fresh piston. Anyway I was looking at putting in the big bore kit and racing cam when I did it just for added performance. Anyone put these on there 250x's or 300exs and how much did it help? any info would be great
thanks

 

hey whats up, i got a bore kit from pro fab and it helped alot usually you have to get oil cooler but i didnt.Anyways it gave alot of performance to mine espicially with exhaust