- 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
- INCLUDES: OS 55HZ Hyper Ringed Helicopter Engine with 40L Carburetor, #8 glow plug and instruction manual
- REQUIRES: 10% to 30% nitro Fuel with at least 18% lubricant (Helicopter Mix) Exhaust system such as the OS PowerBoost Pipe Starting equipment
From the Manufacturer
This is the OS 55HZ Hyper Ringed Helicopter Engine with the 40L Carburetor. Ideal for use in any 50 class helicopter.