Vespa V90 Prim 125 ET3 PK125 POLINI EVOLUTION 133cc 135cc Cylinder Kit Vespa PX Trekker 50cc and 100cc

Trekker 50cc and 100cc

2 or Early series 3 four pole flywheel and stator plate for the Electronic type

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Calibrated around the top rim in mm

Vespa V90 Prim 125 ET3 PK125 POLINI EVOLUTION 133cc 135cc Cylinder Kit Vespa PX Trekker 50cc and 100ccVespa V90 Prim 125 ET3 PK125 POLINI EVOLUTION 133cc 135cc Cylinder Kit With the 133 Evolution Polini Motori presents a completely new development. The cylinder is made of aluminium with Nikasil coating. With 57 mm bore and 51 mm stroke, 133 cc displacement is available. The timing is 124 overflow to 179 exhaust. The layout is determined by six overflows. This is a completely new design with fat volume. The exhaust shape is also new. The exhaust is