Features: Complete S2845 3900KV sensorless brushless motors with 35A ESC and programming card, no need for you to match different motors and ESCs anymore, save your time. IP66 Water-proof and dust-proof for all-weather races.4 Pole Hi-torque motor design, high purity copper windings maximize efficiency, high RPM bearings. The brushless motor shaft diameter is 3.175mm. Max RPM: 50000.Specially designed for 1/12 1/14 1/16 RC car truck with excellent start-up, acceleration, and linearity features. The strong resistant current capability, excellent heat dissipation.<br />△Multiple protection features: Low voltage cut-off protection for battery/Over-heat protection/throttle signal loss protection/motor blocked protection, easily programmed.<br />△Service: There are many excellent motors, ESCs, and pinion gears in our shop. <br/>Specifications:<br />Motor Specifications:<br />Brand: GoolRC<br />KV(RPM/Volt): 3900KV<br />Max RPM: 50000<br />Max current: 57A<br />Max watts: 800W<br />Max voltage: &lt;14V<br />IO: 2.4A<br />Rotor poles: 4<br />Resistance: 0.0196<br />Diameter: 28mm<br />Length: 45mm<br />Shaft length: 15mm<br />Shaft diameter: 3.175mm<br />Sensored: No<br />Connector: 3.5mm golden banana plug<br />Item weight: 114g<br/>35A Brushless ESC Specifications:<br />Item: 35A Brushless ESC<br />Cont./peak Current: 35A/120A<br />Suitable for car scale: 1/18,1/16, 1/14<br />Waterproof or not: Waterproof(IP66)<br />Battery: 2-3S Li-Po<br />BEC output: 5V/2A<br />Input connectors: T plug connector<br />Motor connector: 3.5mm golden banana plug<br />Size: 4*3.3*2cm<br />Item weight: 37g<br/>Program Card Specifications:<br />Item name: Programming Card<br />Color: Black<br />Main material: Plastic<br />Size: 8*5.4*1.3cm<br />Weight: 31g<br />Note: * There could be some deviations due to manual measurement or slight color difference owing to photographing conditions. Thank you for your understanding.<br/>Package information:<br />Package size: 10.3 * 8.2 * 6.3cm<br />Package weight: 212g<br />Gift box package<br/>Package list:<br />1 * S2845 3900KV brushless motor<br />1 * 35A Brushless ESC<br />1* Programming card<br/>