55HZ Limited Edition Heli Engine with PowerBoost Pipe

Aug 03, 2010 No Comments by

The O. S. 55HZ Limited Edition retains all the performance features of the 55HZ-H Hyper – with a wicked new look as well!  This special version engine is all black with “2010 Heli Jamboree Edition” laser etched on the engine and pipe.  The 55HZ Limited Edition features a dual needle 40L carburetor with four-arm throttle lever and offers the power of a .60 with the same mounting pattern and silencer size as the 50SX-H Hyper engine.  The compact PowerBoost Pipe improves efficiency and power for idling, hovering and performing high-rpm maneuvers.  Because this engine is “limited”, only 250 will be produced – with each engine and pipe being numbered to match each other at the factory.  Power, performance, reliability and sharp looks – all available in the O.S. 55HZ Limited Edition!



  • Displacement: 0.55 cu in (8.9 cc)
  • Bore: 0.91 in (23 mm)
  • Stroke: 0.85 in (21.5 mm)
  • Practical RPM: 2,000-20,000
  • Power output: 2.1 hp @ 17,000 rpm
  • Weight: 14.4 oz (408 g)


OSMG1956   55HZ Limited Edition Heli Engine with PowerBoost Pipe    Retail:$699.99  Street:$449.99


Available in early August

O.S., Uncategorized

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West Coast senior editor About me: I’ve been involved with RC aircraft since high school and have flown just about everything. I started my RC career with scratch-building, but now like many pilots I rely on ARFs to get me in the air. My main focus is on pylon racing, aerobats, combat and scale warbirds.
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