Forged 31mm crankshaft with +5mm length rod for Zenoah and CY 22.5-30.5cc RC engines. This is for experienced engine builders and is NOT a bolt in modification. At this time, we do not have any spacers or kits to make this a bolt in mod. You will need to understand how to use this to be able to build an engine with it.
Piston pin diameter: 8mm
Crank pin diameter: 10mm
Journal shaft diameter: 12mm
Journal diameter: 49.9mm
Inventory is limited to supply on hand. We do not make this in-house and it is a limited availability item.