O.S.Max AX Series O.S.Max .55 AX ABL Type 2-Stroke Displacement .545 cu in (8.93cc) Bore .91" (23mm) Stroke .85" (21.5mm) RPM Range 2,000-16,000 Output (HP/rpm) 1.75/16,000 Weight (engine only) 14.3 oz. (404g) Crankshaft Thread 1/4"-28 Propeller Range 11x6 - 13x6 Included Muffler, #8 Glow Plug Decal Sheet, Instructions 90 degree muffler adapter

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2 Years Limited Warranty