The built-in Hall sensor non-adjustable end bell combined with a high precision and balanced rotor guarantees the user a smooth and linear power on demand. The silicon O-ring fitted between the end bell and stator helps to conduct inner heat to the unique motor case to maximize cooling for extreme cooling conditions. The end bell is easy to be removed for maintenance purposes and for the replacement of common wearing parts such as rotor and sensor module (Ex bearings). Customized 3.5mm low impedance bullet connectors soldered to the motor wires guarantee ""plug-and-play"" and stable connections between the ESC and motor. When pairing the QuicRun3650 G2 motor with the Hobbwing QuicRun-10BL60-Sensored ESC, the excellent match between ESC and motor will give you a very smooth and linear power band. Hobbywing QuicRun 3650 SD G2 Features: Linear & Smooth Control Great Heat-dissipation Plug-and-Play Re-buildable Design Compatible (with QuicRun-10BL60-Sensored ESC) Spec Check: Scale: 1/10th Brushed/Brushless: Brushless Sensored/Sensorless: Sensored Pole Count: 2 KV Rating: 1800 LiPo Cells: 2-3S No-load Current(A): 1.3 O.D.(mm): 36 (1.147in) Length (mm): 52.8 (2.079in) Shaft Diameter (mm): 3.17 (0.125in) Weight: 187g Timing: Fixed (HW30404307)