I'm rebuilding / hot-rodding an old Honda SL125, and from what I've learned, an easy way to bump the displacement on those motors is to use a piston, wrist pin and cylinder liner from a SOHC 750. Bumps the displacement on those motors to around 150cc. The 125 cylinder has enough aluminum to be bored to accept the 750 liner.
What's the best source, if any, for this? I need one piston, one wrist pin & clips and one cylinder liner? Standard bore will do, not necessarily any oversize.
Thanks for any hints.
Kirk