Crankshaft with 39,3 mm stroke (original stroke) and 85 mm connecting rod for Fireblade/Polini P.R.E. .
This is a high-end crankshaft made of high quality steel, with 85 mm connecting rod and 18 mm crank pin. The crank webs have a diameter of 72 mm, perfect balancing of the crankshaft is achieved with tungsten inserts. Construction and balancing are perfectly designed for the 70cc cylinder Polini P.R.E.
High-end crankshaft
Stroke: 39,3 mm (original)
Connecting rod: 85 mm
Crankcase diameter: 72 mm
Small end bearing: 12x17x16mm
Crank needle: 18 mm
Balance factor 50%
Weight: 1,75 kg
For Ottopuntouno 8.1 Fireblade, Polini P.R.E.
Made in Italy
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