Features: brand new and high quality Precision balanced rotor, smoothness for best reliability and maximum RPM. High purity copper winding maximizes efficiency, high RPM oversized bearings. Easy to set the ESC parameters with jumpers, the strong resistance current capability, excellent heat dissipation. Excellent torque and long-run times, with 5V/2A BEC output for 1/10 Hsp Redcat Tamiya Axial scx10 D90 HPI Rock Crawler. Improve the authenticity for your RC car, make it more vivid and attractive. Specifications: Material:Metal+Plastic Color:Black Size of Motor:5.3x3.6cm/2.09x1.42inches Width of Brushed ESC:4.2cm/1.65inches Package Includes: 1 Set 540 Brushed Motor 320A Brushed ESC note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.