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This is the OS 55HZ Hyper Ringed Helicopter Engine with the 40L Carburetor.
FEATURES:
- Ideal for 3D flight-power equal to .60 size heli engines
- Same mounting bolt pattern and silencer size as the OS 50SX-H Hyper
- Dual needle 40L carburetor with four arm throttle lever for use with a variety of servo brands
- Two year limited warranty through manufacturer beginning at the date of purchase
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
- Weight: 14.39 oz (408 g)
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