The Firma 3000Kv brushless motor is the preferred choice for the ARRMA Mini-Kraton running on 2S – 3S LiPo power. Featuring a high-quality 4-pole sintered rotor design, CNC machined aluminum housing, high-quality alloy steel 3.175mm (1/8") output shaft, and precision bearings for high durability and smooth rotation. Drivers can reach speeds of up to 50MPH with 3S power.