SunnySky XS High Power X4112S Brushless Motor 400KV
by SunnySky

The SunnySky XS High Power X4112S 400KV Brushless Motor is a high-performance propulsion engine specifically designed for industrial sUAS, heavy-lift multi-rotor platforms, and tactical military applications. Part of the innovative XS series, this motor features a patented semi-enclosed structural design that provides an exceptional defense against sand, dust, and environmental debris. This specialized architecture ensures high-efficiency ventilation and superior heat dissipation, allowing for reliable operation during extended flight missions in demanding or remote environments.

Engineered with premium Japanese EZO ball bearings, the X4112S 400KV delivers ultra-smooth rotation with minimal radial runout, ensuring high stability and reduced vibration—critical for long-range surveillance and high-precision data collection. The internal components feature meticulous hand-wound copper coils that achieve up to a 90% space factor. This reduces internal resistance and maximizes power output, making it a preferred choice for sUAS manufacturers, defense contractors, and advanced educational engineering programs. Its high torque-to-weight ratio and efficiency make it an ideal power plant for 6S LiPo configurations requiring agile yet stable flight performance.

Technical Specifications

• Stator Diameter: 41mm

• Stator Thickness: 12mm

• KV Rating: 400KV

• Configuration: 12N14P

• No-Load Current: 0.6A @ 10V

• Motor Resistance: 60mΩ

• Max Continuous Current: 49A (30s)

• Max Continuous Power: 1225W

• Rotor Diameter: 47.5mm

• Body Length: 33.5mm

• Shaft Diameter: 4mm

• Weight (including wire): 169g

• Battery Support: 6S LiPo

• Recommended ESC: 50A to 60A

• Recommended Propellers: 14x4.7, 15x5, 15x5.5 inch

• Max Takeoff Weight: ≤1700g per axis

What is Included

• 1x SunnySky X4112S 400KV Brushless Motor

• 1x Precision Propeller Adapter and Hardware Set

• 1x Heavy-Duty Mounting Plate and Screw Pack

• Pre-installed High-Temperature Silicone Motor Leads