Check the listing for details. RCGF STINGER 20cc Twin Gas Two Stroke RC Remote Control Airplane Engine. Condition: New. Listed at 375.99 USD. RCGF Stinger 20cc Twin RC Gas Two Stroke Airplane EngineThe New Stinger 20cc Twin is the latest design.Strong Power gives you unprecedented fly experience.Authorized US DealerUS Warranty ServiceAuthentic RCGF Engines!Parameters:Type2 cycle piston valve type gasoline engine for airplaneDisplacement (cc)20.5cc (1.25 cu in)Bore x Stroke (mm)1.08 in(27.6mm) x 0.67 in (17mm)Recommended props15×8, 16×8, 17×6 Maximum Output2.8HP /2.1KWPower supply7.4V-14VFeatures:Distance from cap to cap is 173 mm / 6.81 inCarburetor : WalbroIgnition : Stinger DC-CDI (Computer Controlled auto advance, electronic ignition system)Spark Plug: M8(1/4-32)Requires: Gasoline, 2-cycle oil, ignition battery & propellerRPM range: 1500-8600rpmGasoline-Version : Pre-mixed Fuel, 25-40 (Gasoline):1 (recommended : 30:1) Lubrication Oil : High quality fully synthetic 2 cylinder oil such as Motul 800 2T 100% synthetic racing motor oil , Red line two-stroke racing motor oil , Stihl Ultra high performance 2 cycle fully synthetic engine oil ETC. Break in Propeller : 16X8 (Standard Two Blade prop)Cooling System : Air CooledRCGF Stinger Engine package Includes: electronic CDI ignition, muffler, spark plug, gaskets, bolts, throttle arm extension & manual.Weight: Engine: 1.63 lb (740g)2XMuffler: 2.64 oz (75 g)Ignition Module: 4.94 oz (140 g)Total: Weight: 2.02 lb (920 g)Technical Data: Ignition Battery: 7.4V-14VNiCd or NiMH, 7.4V LiFe or 2S LiPo packGasoline/Oil Mix: 30:1Replacement Spark Plug: M8 1/4-32 or equivalentIdle Speed: 1800 rpm/min