This is the Hobbywing EZRun 4268SD G2R Sensored Brushless Motor (2500kV) [30402140]

Scale: 1/8th
Brushed/Brushless: Brushless
Sensored/Sensorless: Sensored
Pole Count: 4
KV Rating: 2500KV
LiPo Cells: 3-4S
No-load Current(A): 5.0A
O.D.(mm): 42
Length (mm): 68
Shaft Diameter (mm): 5
Weight (g): 360g
Front Bearing: D16*D5*T5
Rear Bearing: D11*D5*T5
ESC: EZRUN MAX8 G2S
Vehicles: 1/8th Buggy, 1/10th Heavy-duty Monster Truck