| well it is bored and stroked to 113cc, that different than just being bored to 113. see if you can find a 52.5 piston, the tighter the tolerances the better, you can either get it replated or sleeved, a sleeve is a steel pipe looking thing that has the ports cut into it and it is pressed into the cylinder, BUT, since your is ported the ports will be bigger than stock and the sleeves ports wont be as big as the ports in the cylinder=fail. you have to get it replated, i dont know why he told you that you need to know the company that made the cylinder, that doesnt matter, go to eric gorrs website and he has a link to US chrome, which will do it for you. Itll be around 300 to get it done, so plan on spending about 350 with shipping and any other charges they put on the bill. good luck with getting it fixed
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