57mm cylinder kit to your 125cc, 140cc & 146cc engine. Fits engines with 57mm stroke and 13mm piston pin
You get:
1. Cylinder ally 57mm
2. High comp piston, 13mm piston pin, rings etc.
3. Gaskets
If you want to upgrade your engine even more, please let us know and we can discuss different head options and race cams.
