SURPASS HOBBY KK Waterproof 2040 Brushless Motor (3900kv)

High-performance brushless motor for RC vehicles The SURPASS HOBBY KK series motor delivers powerful performance for 1/12 to 1/24 RC cars and trucks, ensuring smooth and responsive operation on various terrains and driving conditions. Multiple KV options for customized speed control. Waterproof design for enhanced durability Featuring a waterproof construction, this motor resists moisture and dust, making it ideal for outdoor use in wet or dusty environments without compromising performance or lifespan. Robust metal housing for long-term reliability Built with a metal material body, the motor provides superior heat dissipation and mechanical strength, ensuring stable operation under high load and extended use. 2040 Specifications: Brand: SURPASS HOBBY Series: KK Name: 2040 RC Motor Color: red KV(RPM/Volt): 2280KV/3200KV/3900KV/4480KV (all KV models listed, the one you are buying is in the TITLE of the item) Watt: 220 Max RPM: 50000 Max voltage: <12.6V Max amps: 16A Rotor poles: 4 Diameter: 20mm Length: 37mm Shaft: 2.3mm Shaft length: 10mm Connector: 3.5mm gold Weight:49g 1/12 1/14 1/16 1/18 1/20 1/24 RC Car Truck NOTE: THIS MOTOR HAS A VERY SHORT 10MM Motor Shaft! In order for it to work on a Mini-B or Mini-T, it requires a very narrow pinion gear - we use these: https://www.amazon.com/dp/B0F6VMV53Y?ref=fed_asin_title&th=1