Leopard Brushless Sensored 540 Size Motor 7900Kv 4.5T 2-Pole for 1:10 RC Cars Maximum Amps: 60A LiPO Cell Count: 2S Shaft Diameter x Length (mm): 3.175mm x 15mm Motor Diameter x Length (mm): 35.8mm x 52.5mm Weight (g): 170g