Specifications: Displacement: 123 cc. Weight: 5lb. 1oz. (2300g). RPM Range: 1,600-8,900. Output: 12 hp. Ignition Battery: 4.8-8.4V. Gas/Oil Mix: 32:1 ~ 40:1. Replacement Spark Plug: NGK CM6 or equivalent. Ignition: GP (RCEXL). Carb: Walbro WJ71. Requires: unleaded gasoline, oil, ignition battery & propeller. Includes: electronic ignition, mufflers, spark plugs, gaskets, bolts. RPM: at Sea Level: 7000 GP 28x10 7000 Mejzlik 28x10 7100 Falcon 29x9