Crankshaft -BGM PRO, Direct Intake, Stroke = 57mm, Conrod = 110mm- Vespa Wideframe VM1T,VM2T, VN1T, VN2T, Vespa 150 VL1T, VL2T, VL3T, VB1T, ACMA 125 (19541955), ACMA 150GL (1956-1958), Motovespa 125N (1956-1958) - Gudgeon Pin 15mm (needle Roller Bearing