T-rex 6CH 3D 450SE V2 Remote RC Helicopter Stand for Align Trex 450 V2 Heli Part

Drive Gear Ration:1:12.5:4.24/1:11.5:4.24. Main Drive Gear:150T. Autorotation Tail Drive Gear:106T. Tail Drive Gear:25T. Motor Pinion Gear:12T/13T.

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