Product name:SKYRC 4000KV 8.5T 2P Sensored Brushless Motor CS60 60A Sensored ESC LED Program Card Combo Set for 1/10 1/12 RC Buggy Car 8.5T 4000KV --The motor has hight RPM precision bearings, high temperature neodymium magnet, hight purity copper windings maximizes conductivity . --Providing hight power solder tabs as well as precision engineered for maximum energy conversion. --The ESC is less resistance, less heat, more effective and built-in electronic ON/OFF switch, besides, it can support both sensored and sensorless motors. --With Program Card, you could set cut-off voltage, brake and punch strength, drag brake and other parameters. . Description: Product Category: Motor Brand: SkyRC KV: 4000KV Power supply: 2-3S LiPo battery Watts: 400W Rotor poles: 2 Turns: 8.5T Resistance: 0.0142 Ohm Weight:165g Outer diameter: 36mm Length: 53mm Rotor: 12.5mm Shaft diameter: 3.175mm ESC: Item size: 39 * 38 * 20mm Item weight: 68g Power supply: 2-3S LiPo battery, 4-9S NiMh battery BEC output: 6V/3A Constant current: 60A Burst current: 380A Resistance: 0.0007 Ohm Fan: 8V/0.2A, Max 12.6V Program Card: Item size: 80 * 52 * 6mm Item weight: 16g Cut off voltage: AutoLiPo, None, 5V, 6V, 9V, 12V Auto-LiPo cut off volts / cell: 3.0V, 3.1V, 3.2V, 3.3V Drag brake: 0%, 10%, 20%, 30% Brakes strength: 0%, 20%, 40%, 60%, 80%, 100% Punch strength: 0%, 10%, 20%, 30% Dead band: small, normal, large Reverse type: Proportional Rev.Lock Out, Proportional w/o Reverse, FWD to Brake and Reverse Motor timing (sensored only): none (0°), low (10°), middle (20°),high (30°) ESC type: sensored or sensorless Motor direction: normal, reverse Package list: 1 x SkyRC 4000KV 8.5T 2P Brushless Sensored Motor 1 x CS60 60A Brushless Sensored ESC 1 x LED Program Card 1 x Set of Screws 1 x Cooling Fan 1 x Sensor Cable 1 x Connected Cable 1 x Sticker