The Hobbywing QuicRun 2435SL 1/18 Brushless Motor is designed to deliver extreme power to a smaller scale! This dust-proof motor for will be a great option for off-road vehicles/trucks. Hobbywing has designed a motor compatible with a wide range of RC models. Package includes one brushless motor. Features: High efficiency for more power with lower temperatures! 4-pole rotor design for more torque with strong explosive force. Compared with the previous generation of motors, the output power and efficiency are increased by more than 4%, and the motor temperature is effectively reduced under the same load. 0.2mm thick silicon steel laminations, high strength explosion-proof rotor, high-temperature resistant coil, and imported high-precision and high-quality bearings make the motor super durable. Specifications: Input Voltage: 2-3S LiPo KV: 4500 Pole: 4 Motor Diameter: 0.94" (24mm) Motor Length: 1.42" (36mm) Shaft Diameter: 0.08" (2mm) Shaft Length: 0.47" (12mm) Bearing size: D8*D3*T4 Weight: 61.2g