Crankshaft Naraku Racing Piaggio 50Cc

Crankshaft Naraku Racing HPC for CPI, Keeway, China 2-stroke E2 - high quality HPC crankshaft from Naraku. Produced according to OEM guidelines of Japanese vehicle manufacturers.

It is a HPC Racing full-circle crankshaft, which means that the pre-compression in the crankcase is increased, which in turn leads to much improved cylinder filling. The powerband shifts to the upper rpm range. The counterweights, typically used in full-circle models, are made of plastic and increase the overall weight only slightly compared to standard crankshafts. This means that the crankshaft can also be used with 50cc cylinders without any problems.

The crankshaft comes with a small end bearing.

Diameter piston pin: 12mm

Diameter variomatic stub: 16mm

Thread variomatic stub: M12

Thread alternator: M12