Feature 1Motor Features: 4 pole 12 slot high torque rotor design, with CNC machining 6061, T6 billet aluminum radiator tank, oxidation treatment, exquisite appearance. 2Powerful: High purity copper winding maximizes power, high speed ABEC5 bearing, small friction, low noise, high accuray, long service life. 3Universal Model: 3.175mm outlet, 2838 brushless motor is suitable for all 1 or 12, 1 or 16, 1 or 18 RC brushless cars, M2.5 screws for multiple mounting modes. 4High Efficiency: Removable replaceable rotors, precisely balanced rotors, better smoothness, can provide better reliability and maximum RPM. 5Good Insulation: Brushless motor has ultra thin stator (0.35mm) laminated, excellent performance, high permeability, high silicon content, good insulation, heat resistance.Item Type: RC Car Brushless MotorMaterial: Aluminum alloy, CopperWeight: Approx. 112g or 4ozModel Number: 2838Number Of Motor Poles: 4Motor Length: 40mm or 1.6in (Excluding Shaft)Motor Diameter: 28mm or 1.1inAxle Diameter: 3.175mm or 0.13inShaft Length: 12mm or 0.5inGold Plated Plug: 3.5mm or 0.14inWattage: 600WMaximum Speed: 50000Suitable: For All 1 or 12, 1 or 16, 1 or 18 Brushless Cars .wang-edit-text{ font-family:'Arial' !important } .wang-edit-text table { border-top: 1px solid 000 border-left: 1px solid 000 } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000 border-right: 1px solid 000 padding: 3px 5px } .wang-edit-text table th { text-align: center }Package List1 x 2838BrushlessMotorNote1. Due to manual measurement, please allow 1and 8209 3mm error, thank you!2. Pictures may not reflect the actual color of the item due to differences between different monitors. 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.