I talked to the guy that built my engine for the guy I got the quad from all he remembered was it was 12:1 and bored .060 over new sleeve but he didn't remember if it was a 76mm or 80mm piston they were looking at both so I guess I will find out for sure when I pop off the head to put on my ported one. it better be an 80 or ill be upset...lolTRX2fiveO has it.Ask him.
The 250x i used to have. Saddly i had 2 sell it cuz im poor but u kno i got a 300ex way cheaper and its kinda the same thing just way slower rightnow!:icon_frown:What was the kit on ^^^^??
How did this work out did you end up using it I have sametrx and same problem smokes bad I want go bigger with piston I'm rebuilding head porting it out a little. I would like to know if weisco piston 75mm was a good fit I will bore it out just not trying to reserve it thanks. How is your 250x doing?mine is white and blueanyone know how well this kit works for the 250x? i have been thinking about trying one.