O.S. .91 HZ-R 3D Speed Competition 3D Helicopter Engine w/61G Carburetor MA127-55 2 x 0844-12

2 x 0844-12

•4525HS Motor（1PSC）

10 Configurable Channel Ports

MSH41154 Servo frame

durability

O.S. .91 HZ-R 3D Speed Competition 3D Helicopter Engine w/61G Carburetor MA127-55 2 x 0844-1291HZ R 3D Speed Features: Designed for all out, aggressive 3D competition. Offers incredibly stable mid range torque for awesome 3D flight Carburetor inlet enlarged to 11. 2 mm Exhaust port timing set at 165 Combustion chamber shaped to match the big bore carburetor and advanced exhaust cylinder timing Demand Regulator System (DRS) guarantees a steady fuel supply to the carb at any attitude, on a full or empty tank and during the most abrupt throttle