Piaggio / Vespa 70cc Big Bore Kit

70cc Malossi cast-iron cylinder kits - the best balance between component performance and life of the component. This kit will fit scooters with a 50cc 2T Piaggio engine.

The cast-iron cylinder kits produced by Malossi s.p.A. are designed and manufactured with the specific objective of obtaining high combustion efficiency, long life, and a reliability that suits the Malossi name.

Owing to the experience gained in the preparation of cylinder kits for racing, Malossi engineers have developed the thermodynamics of cast-iron cylinder kits to the fullest, and designed the inner fluid mechanics of the cylinder kit with fanatical precision (see the transfer pipes, exhaust and combustion chamber), thereby obtaining a high level of turbulence in the combustion chamber. The latter has permitted a substantial reduction in specific consumption and a drastic reduction in the exhaust emission of pollutants.

Technical features:

- Material: wearproof, laminate special cast iron
- Recalculated heat exchange surfaces
- NC machine-tool machining
- Transfer and exhaust disigned for maximum efficiency
- Lightened and reinforced, special aluminium alloy pistons with a high silicon content
- Optimized compression ratio
- Very high turbulence combustion chamber

DON'T FORGET TO ADD ABOUT AN OUNCE OF OIL TO THE FUEL TANK WHEN FILLING. YOU STILL HAVE YOUR 50CC OIL PUMP AND NOW YOU HAVE A 70CC.