cylinder kit Polini cast iron sport 102cc 55mm for Ape 50, Vespa PK 50, Special 50, XL 50

102cc cast iron racing cylinder kit for from Polini for 50cc Vespa PK, Special and XL Classic scooters. The cylinder has a 55mm bore and achieves an output of 8.7bhp at 8,200RPM according to manufacturer´s claims.