cylinder kit Polini aluminum racing Evolution 70cc 47.6mm for Piaggio LC

70cc Evolution Racing cylinder kit from Polini. Aluminium build, sharp timing and modular high compression cylinder head give maximum performance. Suitable for Piaggio, Gilera, Aprilia & Derbi Scooter with water-cooled Piaggio 2-stroke engines (LC). It is supplied as a complete kit including cylinder head and necessary mounting hardware. In addition are several base gaskets better dial in the squish and a 12 mm little end bearing. A larger carburettorand a racing exhaust system is recommended. Bore: 47.6. Material: Aluminium with hard-chromed lining. Diameter of gudgeon pin: 12mm. Stroke: 39.3mm