Polini oversize piston with 47.4mm for the 70cc Polini cast iron cylinder kits for scooters with air-cooled Morini engine. The kit includes the piston pin, 2 piston clips and 2 piston rings.
Piston diameter 47.4mm
Piston pin: 10 x 36mm
Piston rings: 2 pieces 1.2mm
Compression height: 20.5mm
Total height: 45mm