?<span style="font-size: 14px;">GoolRC 540 21T 4 Poles Brushed Motor for 1/10 1/12 4WD RC Car</span> <br> <br> <strong>Features:</strong> <br> 4 Pole 12 Slot Hi-torque Motor Design????? ? <br> CNC Machined 6063 T6 Billet Aluminum Heatsink Can????? ? <br> High Purity Copper Windings Maximizes Efficiency????? ? <br> High RPM Oversized Bearings????? ? <br> Precision balanced rotor£¬smoothness for best reliability and maximum RPM????? ? <br> Removable/Replaceable Rotor????? ? <br> Precision Engineered for Maximum Energy Conversion <br> <br> <br> <strong>Specifications:</strong> <br> Size: 540 <br> Turns: 21T <br> Watts: 100W <br> Power supply: 1-3S LiPo Battery <br> Resistance: 0.0875¦¸ <br> RPM: 1760KV/V <br> Max amps: 28A <br> Shaft diameter: 3.175mm <br> Shaft length: 12mm <br>? <br> <br> <strong>Package Information:</strong> <br> Package size: 9.5 * 8 * 6.5cm / 3.8 * 3.2 * 2.6in <br> Package weight: 195g / 6.9oz <br> White box package <br> <br> <strong>Package List:</strong> <br> 1 * 540 21T Brushed Motor