This is the Hobbywing Xerun 1-8 Competition G3 Motor 4268SD-2800kv Brushless Motor. Adjustable timing bi-directional 20-40 degrees. Advanced hall sensor system. The use of double insulated windings 240 deg C R-rated, NMB bearings from Japan, and the high-intensity adhesive 340 deg C users the outstanding performance and super durability.