550 55T Brushed Motor 320A Brushed ESC Set Efficient Waterproof Universal for RC Crawler Car Boat Item Type: Brushed ESC KitMaterial: Iron + Plastic + Copper 550 Motor: Number of Revolutions: 55T Operating Voltage: 7.4-12V Motor Length: Approx. 57mm / 2.2in (Without Shaft) Motor Diameter: Approx. 36mm / 1.4in Shaft Diameter: Approx. 3.175mm / 0.1in Motor Shaft Length: Approx. 12mm / 0.5in 320A Brushed ESC: Plug: T Plug Battery Support: 5-9Ni-MH, 4-6Ni-Cd (4.8V~ 7.2V) Lithium Battery 2-3S: 7.4V-11.1V Current Parameters: Forward 320A, reverse 160A, brake 270A BEC Output: 5V/2A (for receiver, servo power supply) Function: Forward + brake; forward + brake + backward ESC Size: Approx. 43 x 30 x 28mm / 1.7 x 1.2 x 1.1in (excluding wire) Application: Fit for Traxxas, for AXIAL, for HSP, for Redcat, for Tamiya, for HPI