Description: 4 poles Hi-torque motor design. CNC machined 6061 T6 billet alumium heatsink can. High RPM ABEC5 oversized bearings. ESC features enhanced throttle response,excellent acceleration, strong breaks and throttle linearity. Suitable for 1/10 scale RC car, truck, and boat. Specification: Motor RPM: 4370KV Max Current: 66A Max Watts: 820W Can Size: 3650 Sensored: No Shaft Length: 15mm Bullet Connector: 4mm Max voltage: 7.4V(2S)-11.1V(3S) ESC Cont. Current: 45A Burst Current: 260A/10sec Battery: 2-3 Cell Lipo / 4-9 Cell NiMh SBEC: Yes SBEC Output: 5.8V/3A Power Supply Plugs: T Male Motor Plugs: Female 4mm Bullet Connector Size Chart: Motor size(Height x Diameter): Approx. 64x36mm/2.5x1.4inch ESC size: Approx. 43x33x34mm/1.7x1.3x1.3inch Package size: Approx. 108x78x63mm/4.3x3.1x2.5inch Package Includes: 1 Piece 3650 4370KV Sensorless Brushless Motor 1 Piece 45A Brushless ESC Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size