3548 Brushless Outrunner Motor 35mm x 48mm. Custom-made to work with the bel-7800, bel-2041-alu, and ose-90100 drive systems. RPM Options:1500kv for 3s to 5s Lipo.2000kv for 3s to 4s Lipo.Specs: No load current: 3.1A Max power: 910W Internal resistance: 0.023 ohmWeight: 160g (including connectors)Shaft diameter: 5mmMounting Holes: Comes with both 19mm and 25mm spacing. Works with most 540 or 36mm motor mounts.Dimensions: 35x48mMax thrust: 2150g Comes with 4mm male bullet plug preinstalled.Requires:(3) 4mm Female bullet connectors(2) Mounting screws: 3mm thread. The length required will be based on the thickness of the motor mount being used.