Coal -free electric motor (brushless) very high performance produced by the world\'s leading thermal engine manufacturer. Equipped with a reinforced external housing, mounted on large ball bearings with the original O.S. To deliver maximum power for a very long time thanks in particular to the use of very high quality materials and thanks to very high machining precision. Helic output axis on both sides for installation of the engine in the 2 directions. Supplied with stainless steel propeller adapter and fixing accessories. Requires the use of a speed drive of 25A and a lipo battery of 3 elements, it allows to use propellers from 9x6 to 10x3.8. 14 pole engine, KV: 1250. Carter diameter: 28mm. Carter length: 27.5mm. Axis diameter: 3mm. Axis length: 7mm. Weight: 51g. 3.5mm sockets.