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, quality and 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
Public price: 139,00 € + VAT
Made in Italy
New Polini cylinder kits for Yamaha Minarelli engines
Polini Motori presents the new range of kits for Minarelli engines mod. CY, MY, CW with Ø 12mm piston pin.
This feature lets an increase in terms of liability of a parts that its under long stress.
The cast iron cylinder with 6 transfers is machined with tools that grant high quality products, with sliding walls with controlled roughness for a better cylinder-piston sliding. The exhaust diagrams and the transfers have been designed to work in line both with the Polini Original and Scooter Team mufflers. The piston is made of special alloy with high siliceous percentage with the aim to grant the maximum resistance to high temperatures.
The piston rings made of spheroidal cast iron, highly resistant to wear, rebored and lapped.
The head is made of special aluminum light alloy with high coefficient of heat exchange. The combustion chamber has been completely redesigned for a high compression ratios with high turbulence.
Polini cylinders kits for Yamaha Minarelli engines must be installed together with the crankshafts with connecting rods for Ø 12 piston pins.
Polini cylinder kits for Yamaha Minarelli engines Ø 12:
Public price starting from euro 150,00 + VAT
100% Made in Italy