Product name:GTSKYTENRC Combo 2838 3700KV 4700KV Brushless Motor w/ 35A ESC for Traxxas HSP Tamiya Axial 1/16 1/12 RC Car 4700KV+35A Specially designed for RC car with excellent start-up, acceleration and linearity features. Compatible with sensorless brushless motor. The strong resistant current capability, excellent heat dissipation. Multiple protection features: Low voltage cut-off protection for litium or nickel battery /Over-heat protectionThrote signal loss protection / Motor blocked protection/. Easily programmed and compatible with pocket-sized program card. . Description: Brushless 2838 Motor Description: Item Brand:GTSKYTENRC Item Number:GTSKYTENRC 2838 KK Series Product Size:24*45mm Suitable Scale of Car/Battery:1 / 14, 1 / 16, all 2s, flat running 3s KV value: 4700KV / 3700KV Watts: 600 Max voltage: Less than 8V / 9V Max Amps: 75A / 68A Rotor poles: 4 IO: 2.6A / 2.4A Resistance: 0.0147 / 0.0162 Max RPM: 50000 Shaft: 3.175mm Length of extend shaft: 15mm Connector: 3.5mm gold Applicable models: 1 / 14, 1 / 16, all 2s, flat running 3s Color: red black Material: aluminum alloy 35A ESC Description: This is Electronic Speed Controller (ESC) for car. High power system for RC model is very dangerous, so please read this manual carefully. Specification: Brand: GTSKYTENRC Name: 35A ESC Cont.Current/Burst Current: 35A/120A Motor Type: Sensorless Brushless Motor For 2S Lipo or 6 cells NiMH : 1. on-road: 28XX-Size or smaller motor with the KV