Displacement: 4.58cc Bore: 18.35mm Stroke: 17.6mm Practical R.P.M.: 3000~39800rpm Power Output: 2.480PS/39800rpm Weight: 350g Ports: 5ports Sleeve: ABC Crankshaft Diam.: 14mm diameter Glow Plug Type: Turbo Exhaust: Rear Carburetor Diam.: 8mm (Variable) Case Material: Aluminum Carburetor:3 Needles