Featuring the Leopard line of performance radio control brushless motors and water jackets, a brand known for superior quality at an affordable price. Brought to you by Atomik RC your one stop online RC Shop. Motor Type: 2-Pole Brushless Sensored Inrunner 540 Size Motor. Turns: 13.5T. Max Current: 20A. Battery Cell Count: 12.6V. RPM V (KV): 2850kv. Max Watts: 252W. Shaft Length: 15mm. Shaft Diameter: 3.175mm. Length: 2.1in (52.5mm). Weight: 6 oz (170g).