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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
$341.99
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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
HP 2.1PS, 2.07 HP @ 17,000rpm
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)