Piston Bore Question

[300ex02]

Hey guys,

First of all i was looking to bore my 300 out to a 330. Can any one tell me what bore size that is... .020 , .040 or what? Can i just buy a piston kit from wiseco for 79.99 and that is all i would need other than to bored out my engine. any help would be helpful!

Thanks

[TRX300X]

You can't just bore out the cylinder. You have to have it resleved to accept an oversize piston. The 330 piston is an 80mm piston and you can't buy it from Wiseco either. Wiseco only sells it to fourstroke tech. My advice to you is buy the big bore kit from powroll.