KIT INCLUDES:Malossi 90cc Cylinder Kit #3116919 (2 Hole Exhaust Flange Style)OEM Full Circle Crank 42mm Stroke - MUST USE LARGER TAPER FLYWHEELHead Plug #278359BNGK B8ES Spark PlugBase Gaskets x2TECH:Crank requires - LARGE TAPER FLYWHEEL (SEE OPTIONS AT BOTTOM OF PAGE)Engine Type Minarelli HorizontalDisplacement 90ccPiston Pin 13mmStroke 42.3mmPiston Bore 52mm