Tower Hobbies
O.S.® 55HZ-H Hyper Ringed Engine

Features
  • Installs in the same space as the 50SX-Hyper
  • A brand-new, 3-needle 40L carb
  • A four-arm throttle lever for easy servo adjustments
  • Durable, corrosion-proof bearings
  • New porting
Small in size – delivers big 3D power!
O.S. 55HZ-H Hyper Ringed Engine
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.

PowerBoost Pipe 55 Muffler
The PowerBoost Pipe 55 (available separately LXXYG5) improves efficiency and power while featuring a compact size!
Specifications
Displacement: 0.55 cu in (8.93 cc)
Bore: 0.91 in (23 mm)
Stroke: 0.85 in (23.5 mm)
Practical rpm: 2,000-17,000 rpm
Weight: 14.4 oz (408 g)
Requirements: 10-30% nitro fuel with at least 18% lubricant
55HZ-H Hyper Ringed Engine
       LXXSY8 ONLY       Buy Now Stock Status:

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Prices shown were current at time of ad production and are subject to change.
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