Crankshaft Vespa 50 Special /PK/N/S Polini

Crankshaft Vespa 50 Special /PK/N/S Polini.

From Polini, we present to you this advanced intake crankshaft.

You can install it both in modified engines and in standard engines, gaining a substantial intake charge.

The connecting rod is CNC machined to achieve greater reliability and reduce engine vibrations to a minimum.

It is essential to acquire the IR track to supplement the flywheel side pin, otherwise you will not be able to install the typical needle bearing of the PK XL crankcase.

• Stroke: 43
• Connecting rod: 87mm
• Taper: 20
• Cage: 12x17x16

Suitable for Vespa 50 Special, Vespa 50 N, Vespa 50 S, Vespa 50 PK.

Attention! You must carry out balancing checks before installing in the engine, since manufacturers deny warranty for any balancing fault found after installation.