[brnmlky]

Hello everybody.
Ok i have a few question rebuilding my 300ex. Its 2000 its never been rebuildt. First dose anyone know the piston size, jug size, and vlave size. i have never rebuildt a atv top end. so what do i need to do? I dont know if i want to keep it stock or put alittle more power in it. so if anyone can give me some pointers that would great.:icon_ peace::sad:

 

[Redracer]

Welcome to the site. Check these guys out...

http://www.powroll.com/P_HONDA_TRX250X-300EX.htm

 

[mud99]

Welcome to the forums. I would also get a manual to help with normal maintenance.

 

[TRX2fiveO]

74mm is the piston stock size check out the web site redracer listed they got some good kits.