Specifications:
Stock Number: DLEG0455 
Displacement: 55.6 cc (3.39 cu in)
Bore: 1.76 in (45 mm)
Stroke: 1.37 in (35 mm)
Weight: 
      Engine: 3.74 lb (1.33 kg)
      Muffler: 3.17 oz (90 g)
      Ignition Module: 5.11 oz (145 g)
Output: 5.5 hp @ 8,500 rpm
Requires: Gasoline, oil, ignition battery & propeller
Includes: Electronic ignition, muffler, spark plug, engine standoffs, integrated choke rod guide & rear-mounted carb

Technical Data:
Ignition Battery: 4.8-6.0V NiCd or NiMH, 6.6V LiFe or 7.4V LiPo pack (LiPo or LiFe use requires voltage regulator.)
Compression Ratio: 7.6:1
Gas/Oil Mix: 30:1
Replacement Spark Plug: NGK CM6 (DLEG5510) or equivalent
Weight Breakdown: Engine: 32.1 oz (910 g); Muffler: 2.1 oz (60 g); Ignition: 4.2 oz (120g)