who does the best porting for mx?who has the best 310 big bore kit?

[quadracerkid15]

who does the best porting for mx?all i have is a dg exhaust system and a k&n?who makes the best 310 big bore?

[2002shee]

For porting questions you need to talk to eviltwin. Send him a PM.

[370banshee]

as far as a 310 big bore for a lt250R... you might be out of luck.... there are a very companies that make the sleeve...... there was a guy on here that was gonna build one.... but couldn't find a piston.... talk to 5.0 nick abouit gettgin teh biog bore kit.... i think trinity makes a 295cc kit.... and talk to eviltwin about the porting... oh and your definataly gonna wanna dump that DG pipe.....