Specifications: Displacement: 61 cc Bore (x 2): 36 mm Stroke (x 2): 30 mm Total: 1.98 kg RPM Range: 1400-8500 Output: 7,0 hp @ 8500 rpm Includes:Electronic ignition, 2 mufflers, 2 spark plugs, mount &: engine standoffs, spiral wire wrap, connector safety clips &: manual Suggested Propellers: 22x10 - 23x10 Technical Data: Ignition Battery: 4.8V-12V Compression Ratio: 7.6:1 Gasoline/Oil Mix: 30:1 Technical Data: Ignition Battery: 4.8V-12V Compression Ratio: 7.6:1 Gasoline/Oil Mix: 30:1 Replacement Spark Plug: DLEG6026 Weight Breakdown: Engine: 54.85 oz (1555 g): Muffler 1: 2.82 oz (80 g): Muffler 2: 3.0 oz (85 g): Ignition: 7.44 oz (211 g)