Crankshaft (stroke 43mm / piston pin 12mm) - Polini

245,70 EUR shipping costs Product code: POL.2100054

Crankshaft (43mm / 12mm) Polini for the following applications: Vespa PK 50 AIR 2T (1983-1989) / PK 50 FL AIR 2T (1990-1996) / PK 50 XL AIR 2T (1986-1989) / Special 50 AIR 2T (1974-1979) / SS 50 AIR 2T (1965-1971) / V 50 AIR 2T (1965-1979).

Regarding racing engines, the connecting rod is machined from a solid block to increase its strength under stress. The intake setting has been modified to improve engine performance. The design of the crankshaft has been optimized to reduce vibrations. Safe and reliable, its assembly is recommended for both original and modified engines. Made in Italy.

Technical specifications:
- Small needle bearing included (12x17x15 mm);
- Stroke: 43 mm;
- Piston pin: 12 mm;
- Cone: 19 mm;
- Class: Sport;
- Type: For Race.