cylinder kit Polini aluminum racing Evolution 130cc 57mm for Vespa 125 ETS, PK, Primavera 2T, Primavera ET3 2T, XL

130cc Evolution Racing cylinder kit from Polini. Sharp timing and single-piece manufacture ensure the cylinder head gives high compression and maximum performance. Suitable for 125cc Vespa ETS, PK, Primavera 2T, 2T Primavera ET3 and XL maxi-scooters. It is supplied as a complete kit including cylinder head and necessary mounting hardware. A larger carburettorand a racing exhaust system is recommended. Displacement: 130cc. Bore: 57mm. Material: Aluminium with hard-chromed lining. Diameter of gudgeon pin: 15mm. Stroke: 51 mm compression ratio: 12,9:1