The iFlight XING2 1806 2500Kv is a quality motor designed for 3-3,5" Cinewhoops and powerful 4" drones with 6S battery or 5" ultralights with 4S battery. Its size is comparable in performance to the 2204 motors. To keep the weight low at 20.2g including black cables, the motor uses a T-mount propeller mount with a 1.5mm shaft with 6x6mm M2 holes.
The iFlight XING2 series of motors is one of the better ones on the market. They use a durable 7075 aluminum alloy rotor, titanium alloy shaft, quality NSK bearings as well as N52H round magnets.