DescriptionType:4-stroke Displacement:.62 cu in (10.21cc) Bore:26.2mm Stroke:19.0mm Cylinders:Single Total Weight:464 g (16.4 oz) Engine (Only) Weight:418 g (14.7 oz) Muffler Weight:46 g (1.7 oz) Crankshaft Threads:M7 x 1mm Prop Range:11x7 thru 13x7 Fuel:10% - 30% nitro - Synthetic Oil Mounting Dimensions:137mm x 53mm x 102mm Muffler Type:Cast Cylinder Type:AAC Carb Type:Barrel - 2-needle Crank Type:Dual ball bearing