Cylinder Polini 70cc MBK 51 AC

Cylinder POLINI, Aluminium 70cc, MBK 51 AC
One of the supreme and very well finished kits for the MB10 51 / motobecane av10 engine, it has everything necessary to please:
Large diameter 46 mm (69.46 mm actual with original crankshaft stroke 41.8 mm)
Very thin single ring (1 mm X d .46 mm) made of chromed and curved steel to allow higher revolutions, the piston from the ASSO brand under POLINI license.