Crankshaft (stroke 52.8mm / piston pin 15mm) - Polini

Crankshaft (52.8mm / 15mm) Polini for the following applications: Vespa Primavera ET3 125 AIR 2T (1967-1983).

Technical specifications:
- Small needle bearing included (15x19x20 mm);
- Connecting rod: 102 mm;
- Stroke: 52.8 mm;
- Piston pin: 15 mm;
- Cone: 20 mm;
- Class: Race;
- Type: Big Evo.

Note: Use C4 bearings.