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More muscle for .40-size aircraft.
Unique, angular head design boosts overall cooling.
Comes with an assembled 40K carburetor with an easy-to-adjust rear angle needle valve for added safety.
Innovative Power Box E-3071 muffler minimizes exhaust noise without reducing overall power.
Features a #8 glow plug, a long-standing favorite of 2-stroke pilots around the world.
Put more power in your .40-size model the easy way: just drop in a 55AX engine. It has the same bolt pattern as the 46AX for no-mod retrofits, but it also has the added displacement needed to swing bigger props - and everything you need for better 3D, precision and sport flying. Features: A diagonally-placed needle offers more pilot safety and eliminates the need for a remote needle valve. The six-sided, angular head offers unique looks and significantly more surface area for cooling. Included E-3071 Power Box muffler quiets without compromising power. Exclusive ABL (Advanced Bimetallic Liner) reduces friction and wear. Requirements: Aircraft blend fuel containing 5-20% nitromethane with at least 18% lubricant Specifications: Displacement: 0.545 cu in (9 cc) Bore: 0.91 in (23 mm) Stroke: 0.85 in (21.5 mm) Rpm Range: 2,000-17,000 Output: 1.68 hp @ 16,000 rpm Weight: 14.3 oz (404 g) w/o muffler; 18.11 oz (513 g) w/muffler Includes: #8 glow plug, E-3071 Power Box muffler and needle valve extension Recommended Props: 11x6, 11x7, 12x6, 12x7, 12x8 and 13x6