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O.S. Engines .55HZ-H Hyper Ring 40L OSM15630
$390.48
O.S. Engine hyper Ringed helicopter engine is 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 f..
O.S. Engines Powerboost Pipe III 50 and 55HZ-H OSM72149000
$173.71
This is the O.S. Engines Powerboost Pipe III for the 55HZ Hyper, 55HZ-R, and 50SX-H Hyper helicopter engines. Give your helicopter a significant boost to efficiency and power with this pipe designed especially for helicopter..
