Features: 4 Pole 12 Slot Hi-torque Motor Design. High Quality: Machined 6061 T6 Billet Aluminum Heatsink Can, High Purity Copper Windings Maximizes Efficiency, High RPM ABEC5 Oversized Bearings. Universal fit, for 1:16, 1:18 2S RC car. Precision balanced rotor, smoothness for best reliability and maximum RPM. Stator - Super Thin (0.35mm) Laminations. Specifications: Name: 2435 RC Motor Color: Red KV(RPM/Volt): 4500KV Watt: 300 Max RPM: 60000 Max Voltage: <13.2V Max Amps: 22A Rotor Poles: 4 Diameter: 24mm Length: 34mm Shaft: 2.0mm Shaft Length: 12mm Connector: 3.5mm Gold Weight: 59g 25A ESC: 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 Bullet Connector Size: 40*27*15mm Weight: 29g Programming Card: Low voltage cut off: 3.1V/Cell 2.8V/Cell 3.3V/Cell No cut-off Start mode:Medium, soft, strong Max brake force: 25%, 50%, 75%, 100% Max reverse force: 25%, 50%, 75%, 100% Neutral range: 6%, 9%, 12%, work state Package Information: Package Size: 9* 6*3.5cm Package Weight: 143g General Box Package Packing List: 1* 4500KV Brushless Motor 1* 25A ESC 1* Programming Card