Gearbox (gear cogs incl. drive shaft) -BGM PRO- Vespa Smallframe, 4-speed- 58, 54, 50, 46 teeth, Vespa PK S, PK XL1, PK XL2, ETS, V50 (V5A1T from Nr. 69444), Special (V5B3T from Nr. 94315), Elestart (V5B4T from Nr. 1514), PV125 (VMA2T from Nr. 150203), E