2430 7200KV 4P Sensorless Brushless Motor with 25A Brushless ESC for 1/18 RC Off-Road Car Boat Motor:4 poles Hi-torque motor design.CNC machined 6061 T6 billet alumium heatsink can.High purity copper windings maximizes efficiency.High RPM ABEC5 oversized bearings. Universal fits 1/18 brushless cars-multi-mounting system for M2.5 screws.Precision balanced rotor, smoothness for best reliability and maximum RPM. Stator - Super Thin (0.35mm) laminations.Removable/replaceable.Precision engineered for maximum energy conversion. Electric Speed Controller:Compatible with sensorless brushless motors.High anti-interference capability.Super smooth and accurate throttle linearity. Using advanced software interface to set up or update the software.Mutiple protection features: low voltage cut-off protection, over-heat protection and throttle signal loss protection.