This is a Redcat 3421kv Brushless Motor, intended for use with the SC, XBE, XTE models of the Blackout SC, XBE and XTE Trucks.
Motor: 3421kv brushless
Dimensions: (Diameter*Length): 37mm*52mm
Shaft size: 3.2mm
Connector: 3.5mm male bullet
Distance across between mounting holes: 25mm