Sensorless Brushless Motor for Stock Class Racing. Dimensions: 51 mm (L) x 36 mm (Ø). Motor type: Brushless. No-load RPM per Volt: 5120 kV. The front bearing is 26% larger and the rear bearing is 6% smaller than the G2. The asymmetric design ensures stable and smooth motor operation. Timing: adjustable. Optimal heat dissipation thanks to a special housing design and large holes in the front and rear end plates. A brushless motor is an electric motor without brushes, which offers higher efficiency, less wear, and lower weight compared to brushed motors. Sensor-controlled brushless motors have an additional sensor cable, allowing for fine-tuning and smooth starts. Additionally, they can achieve higher RPMs compared to sensorless motors.