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Polini Evo crank

Polini Crankshaft "Evolution"  10mm piston pin for Minarelli vertical racing and "Hyper Racing" engines.

It was developed to go with Polini's 70cc Evolution cylinders. This version has a standard 40mm stroke and an 80mm connecting rod for 10mm piston pin. Full-circle crankshaft (with counterweight inserts) with special reinforced TiN-coated connecting rod and a 16mm smooth spline (variator-side).

Small end bearing is included, main bearings and seals are not included.

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