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!
SPECIFICATIONS
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)
Retail
OSMG1956 55HZ Limited Edition Heli Engine with PowerBoost Pipe $699.99
Visit the O.S. Engines website at www.osengines.com
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