DLE-170 Twin Cylinder Two Stroke Side Exhaust Gas Engine for High-Performance RC Aircraft and Model AviationCondition: New OriginalNote: This 100% Genuine part is non-returnable and non-exchangeable. Please verify the correct part number before purchasing, instead of solely relying on the model.Specification:Performance: 17.5HP/7500rpmIdle Speed: 1100 rmp/minStatic Thrust: 35kg/100 meters AltitudeStatic Thrust: 31.5kg/1800 meters AltitudeRecommended Propeller: 30x12, 32x10Spark Plug Type: NGK CM6Displacement: 170cm3Diameter ??Stroke: 52mm??0mmCompression Ratio: 9.5??Lubrication Ratio: 30:1Weight of Main Engine: 3620gWeight of Exhaust: 470gWeight of Ignition: 190gIgnition voltage: 4.8V-8.4VApplications:Fit For High-Performance RC Aircraft and Model Aviation