Description : 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 / 16 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 . ) laminations . Removable / replaceable . Precision engineered for maximum energy conversion . Specification : RPM : 7200KV Max Current : 24A Max Watts : 200W Can Size : 2430 : No Can Size : 24 x30mm Shaft Size : 2x12mm Connector : 3 . 5mm Weight : 45 . 5g / 1 . 6oz Max voltage : 7 . 4V ( 2S ) Note : there &# 39 ; s some little error from human measuring . Electric Speed Controller Compatible with sensorless brushless motors . High anti - interference capability . Using advanced software interface to set up or update the software . Super smooth and accurate throttle linearity . Fast response to throttle input . Mutiple protection features : low voltage cut - off protection , over - heat protection and throttle signal loss protection . Specifications : Cont . Current : 25A Burst Current : 90A / 10sec Battery : 2 Cell Lipo / 4 - 6 Cell NiMh BEC : Yes BEC Output : 5V / 1A Power Supply Plugs : T Male Motor Plugs : Female 3 . 5mm Connector Size : 40x27x15mm Weight : 29g / 1oz Package Includes :(3 Pack) 1 x 2430 7200KV 4P Sensorless Brushless Motor 1 x 25A Brushless Electric Speed Controller