Polini 2100070 Crankshaft

Polini 2100070 Crankshaft Silver . Unleash the power of your Vespa with the Polini Evolution "Solid Weights" crankshaft. This high-performance component increases displacement to 152cc, featuring a 54mm stroke and a precisely balanced 105mm connecting rod. Designed to minimize crankcase turbulence and maximize gas compression, it ensures peak performance. Requires the Polini reed valve intake cylinder (ref. 140.0227) and crankcase reaming. Compatible with Vespa Primavera and ET3 models. The Evolution Solid Weights crankcase can only be used if the engine is equipped with the new cylinder with reed valve intake, ref. 140.0227.The shape of the circular weights radically reduces turbulence inside the crankcase, increasing the compression of the gases transmitted to the cylinder head during the explosion phase. Balance is achieved using tungsten inserts and aluminum caps to reduce volumes. To use the new connecting rod system, the crankcase must be reamed. The Polini Evolution Solid Weights connecting rod kit increases the stroke to 54 mm. The connecting rod is made from a single block with 105mm between centers. Assembling this new product allows for the assembly of a 152cc engine. All Polini connecting rods are perfectly balanced to ensure maximum performance.Compatibility:VESPA VESPA PRIMAVERA ET3 :- VESPA, VESPA PRIMAVERA ET3, 125, 1983- VESPA, VESPA PRIMAVERA ET3, 125, 1982- VESPA, VESPA PRIMAVERA ET3, 125, 1981- VESPA, VESPA PRIMAVERA ET3, 125, 1980- VESPA, VESPA PRIMAVERA ET3, 125, 1979- VESPA, VESPA PRIMAVERA ET3, 125, 1978- VESPA, VESPA PRIMAVERA ET3, 125, 1977- VESPA, VESPA PRIMAVERA ET3, 125, 1976VESPA VESPA PRIMAVERA :- VESPA, VESPA PRIMAVERA, 125, 2016- VESPA, VESPA PRIMAVERA, 125, 2015- VESPA, VESPA PRIMAVERA, 125, 2014- VESPA, VESPA PRIMAVERA, 125, 2013- VESPA, VESPA PRIMAVERA, 125, 1975- VESPA, VESPA PRIMAVERA, 125, 1974- VESPA, VESPA PRIMAVERA, 125, 1973- VESPA, VESPA PRIMAVERA, 125, 1972- VESPA, VESPA PRIMAVERA, 125, 1971- VESPA, VESPA PRIMAVERA, 125, 1970- VESPA, VESPA PRIMAVERA, 125, 196. tradeinn Motardinn