Poros engkol -BGM PRO, pemasukan langsung, langkah = 57mm, batang penghubung = 110mm- Vespa Rangka Lebar VM1T, VM2T, VN1T, VN2T, Vespa 150 VL1T, VL2T, VL3T, VB1T, ACMA 125 (1954-1955), ACMA 150GL (1956-1958), Motovespa 125N (1956-1958) - Pin piston Ø15mm