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55HZ-H Hyper Ringed .55 Helicopter Engine

Item No. OSMG1955
55HZ-H Hyper Ringed .55 Helicopter Engine
Brand Logo
3.3 out of 5 Customer Rating

55HZ-H Hyper Ringed .55 Helicopter Engine

Item No. OSMG1955
$389.99
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Small in size — delivers big 3D power!

The 55HZ-H Hyper Ringed from O.S. has the power and reliability to make your heli do virtually whatever you want! Capable of installing in the same space as the 50SX-H Hyper, it features a brand-new, 3-needle 40L carb, a four-arm throttle lever for easy servo adjustments and more.


O.S. Two Year Limited Warranty
  • Installs in the same space as the 50SX-Hyper
  • A brand-new, 3-needle 40L carb
  • New porting
  • A four-arm throttle lever for easy servo adjustments
  • Durable, corrosion-proof bearings

Product Specifications

Manufacturer # 15630
Bore 0.91 in (23 mm)
Crankshaft Threads UNF1/4-28
Crankshaft Type Threaded
Cylinders Single
Displacement 0.55 cu in (8.93 cc)
Power Type Glow
Product Height 3.6 in (90.9 mm)
Product Length 3.0" (76.6mm) from backplate to front bearing
Product Width 2.0 in (52 mm) at mounting tabs
RPM Range 2,000 - 17,000 rpm
Stroke 0.85 in (23.5 mm)
Total Weight 14.40 oz (408 g)