55HZ HYPER 40L | 16530

The O. S. 55HZ-H Hyper Ringed Heli engine is cause to rejoice for 3D heli fliers! The 55-HZ-H Hyper Ringed engine cranks out optimum power with a minimum of space! The PowerBoost Pipe 50/55 is a first from O.S. – designed especially for helis, improving efficiency and power while featuring a compact size. It also fits the 50SX-H Hyper Ringed heli engine.

• Features the same mounting pattern and silencer size as the 50SX-H Hyper engine
• Dual needle 40L carburetor with four-arm throttle lever is designed to optimize the power, performance and reliability of the 55HZ 
• Produces a range of 2,000 - 20,000 rpm

• Displacement: 0.55 cu in (8.93 cc)
• Bore: 0.91 in (23 mm)
• Stroke: 0.85 in (21.5 mm)
• Practical rpm: 2,000-20,000
• Output: 2.07 hp @ 17,000 rpm
• Weight: 14.39 oz (408 g)

• Power Boost Pipe as an option or Hatori Muffler