Albero booster POLINI - Spinotto ⌀12 mm

NEW POLINI FOR RACE Ø 12 CRANKSHAFTS FOR YAMAHA MINARELLI

Polini Motori increases its range of crankshafts dedicated to the scooters equipped with Minarelli engines (CY, MY, CW models).
With the aim to improve and increase its resistance, the quanlity and the performance, the connecting rod machined from a block can be used with 12mm special pistons as an alternative to the original 10mm original piston pin.
Polini For Race Ø 12 Crankshafts for Yamaha Minarelli are equipped with the connecting rod to be installed with the new improved piston pins.
They have been perfectly balanced to reduce vibrations and power loss and they are thermically treated to increase their resistance.
Polini For Race Ø 12 crankshafts are proper to be used with the cast iron 40cc/70cc cylinders kit up to 14hp.
Polini For Race Ø 12 Crankshafts for Yamaha Minarelli
Item 210.0048/12 Yamaha Horizontal
Item 210.0049/12 Yamaha vertical

Special kit with Ø 12 piston pins are available to be matched to the crankshafts:
166.0074/12
166.0074/12R
166.0076/12
166.0076/12R
166.0083/12
166.0083/12R
Made in Italy