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Crankshaft -MAZZUCCHELLI RACING reed intake 60mm stroke, full circle- Vespa PX200

partnumber 1620012

Delivery time: 1-2 days, Express 1 day*
The full circle crankshaft was developed to raise the primary compression and boost the power over the complete rev range thanks to a better filling of the cylinder.

One thing to consider is that the cross section of the inlet is reduced with the full circle crankshaft and that it can be used with reeds only. Up to 7.000 rpm the full circle crank gives better results, afterwards the cross section is too low to allocate enough fuel.

The longer stroke by 3mm gives an increase in capacity as well as the possibility to achieve a higher revving or more torquey engine depending if you are using head or base gaskets.
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