Specifications:
Displacement: 55.6 cc (3.392 cu in)
Bore: 1.77 in (45 mm)
Stroke: 1.38 X in (35 mm)
Weight: 3.4 lb (Engine - 2.8lb, Muffler - .22lb, Ignition - .26lb)
RPM Range: 1,350-8,500
Output: 5.5 hp @ 7,500 rpm
Requires: unleaded gasoline, oil, ignition battery & propeller
Includes: electronic ignition, muffler, spark plug, gasket, bolts, machined aluminum standoffs, throttle arm extension & mounting template
Suggested Propellers: 22x8, 22x10, 23x8 & 23x10

Technical Data:
Ignition Battery: 4.8-6.0V NiCd or NiMH, 6.6V LiFe or 7.4V LiPo pack (LiPo use requires voltage regulator.)
Compression Ratio: 7.6:1
Gas/Oil Mix: 30:1
Replacement Spark Plug: NGK CM6 or equivalent
Weights (Individual): Engine: 47.6 oz (1,310 g); Exhaust: 3.5 oz (100 g); Ignition: 4.2 oz (120 g)

Ignition: Rcexl