In stock
  • 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 it needs to swing bigger props and everything you need for better 3D, precision and sport flying.
  • Direct, bolt-in replacement for the 46AX.
  • A diagonally-placed needle offers more pilot safety and eliminates the need for a remote needle valve.
  • The 6-sided, angular head offers unique looks and significantly increases surface area for better cooling.
  • Stock Number: OSMG0557
  • Displacement: 0.545 cu in (9 cc)
  • Bore: 0.91 in (23 mm)
  • Stroke: 0.85 in (21.5 mm)
  • Practical rpm: 2,000-17,000
  • Output: 1.68 hp 16,000 rpm
  • Weight:
  • 14.3 oz (404 g) w/o muffler
  • 18.52 oz (525 g) w/ muffler
  • Includes: #8 glow plug, E-3071 Power Box muffler & needle valve extension
  • Recommended Props: 11x6, 11x7, 12x6, 12x7, 12x8 & 13x6
More Information
Brand O.S. Engine
Engines - Fuels - Accessories Glow Engines
Engine Size Range (cc) 0 - 50 cc
Engine Class Selection Single
Engine Type Selection 2 Strokes