Vespa PK S Electric Starter 125 [1983-1991] - Cast iron cylinder kit ø 57.5 pin ø 15

MALOSSI cast iron cylinder kit for Vespa PK S Electric Starter 125

The MALOSSI cast iron cylinder kit ø 57.5 pin ø 15 is intended for the Vespa PK S Electric Starter 125 in the full year range 1983-1991. The cylinder is made of cast iron and is designed for durable use in city and sports use. The design is suitable for applications where a cylinder kit with a 57.5 mm diameter and 15 mm piston pin is required.

Technical features

• Material: cast
• Diameter: Ø 57.5 mm
• Piston pin: Ø 15 mm
• Stroke: 51mm
• Displacement: 132.5 cm³
• Compression ratio: 1:11.4
• Piston compression: Racing
• Piston rings: 2
• Cylinder head: hemispherical
• Spark plug: central, IW 27
• Recommended carburettor: SHB 20 / PHBL 25
• Performance range: 12/18

Design and vehicle assignment

The design uses a cast cylinder with a recalculated cooling surface and a reinforced aluminum piston with a high silicon content. Two self-lubricating piston rings with a rectangular cross section support a low-noise profile. The kit is intended for crankshafts with a 51 mm stroke.

The vehicle assignment is: Vespa PK S Electric Starter 125, built between 1983 and 1991.

Important usage notice

This product is intended exclusively for use in competitions at designated venues in accordance with the regulations of the relevant sports associations. No liability is assumed for improper use.