bought the bike with the cylinder marked and no piston, mark is deep! have to bore more than 1mm, the only pistons i can find is 1 over standard bore and i need one that is slightly bigger, any help would be much appreciated

 

You may have some extra work ahead according to this site. Product Search Engine For All Products - Wiseco Piston Inc.

 

yea think i will have to buy a cylinder, i jus thought they would of made a piston abit bigger