Crankshaft -BGM Evolution 52mm stroke, 105mm conrod (standard), Ø=90mm webs- Piaggio Maxi 2-stroke, Aprilia SR125, Gilera Runner 125FX, 180FXR, Italjet Dragster 125, 180, Piaggio SKR125, SKR150, Typhoon 125, Skipper125, Skipper150, Hexagon 125EX, 150EX,