Specs: Engine Size: .21ci Displacement: 3.49cc Max. Power: 2.72 hp R.P.M (Max. Power): 31800 rpm Practical Range: 6000 - 38500 rpm Bore x Stroke: 16.26mm x 16.8mm Glowplug Type: TURBO - C7TC Transfer Ports: 5 CrankShaft Type: 14.5mm - SG Carburetor Type: 8mm Slide plastic body