HOBBYWING SeaKing 2040SL 4000KV V2 Brushless Inrunner Boat Motor

Engineered for power and outstanding performance - designed for high-performance RC boat models, delivering high power output with balanced efficiency, and built for high-load extended operation.
Efficient heat dissipation: the water-cooling jacket combines a high-efficiency internal circulation design with external cooling fins, helping the motor maintain its performance during extended runs.
Perfectly compatible with the HOBBYWING SeaKing V4 series ESCs for better compatibility and excellent control performance.
CNC-machined, polished cooling fins on the water-cooling jacket for maximum flow and heat transfer.
Two KV options per size for flexible configuration with different propeller setups (2040: 4000/5000KV, 2850: 3600/4500KV, 3660: 2600/3400KV, 3674: 1900/2300KV).
Premium materials, built to last: high-hardness CNC aluminum housing, premium-brand high-quality bearings, ultra-thin silicon steel laminations, high-temperature oxygen-free copper wire, high-temperature explosion-proof rotor and high-toughness alloy output shaft.

HOBBYWING SeaKing 2040SL 4000KV V2 Brushless Inrunner Boat Motor

Manufacturer Code: 30419010
Type: Brushless, Sensorless, 2-pole
KV: 4000KV
LiPo: 2-3S
No-load Current: 0.9A
Diameter: 20mm
Length: 41.2mm
Shaft Diameter: 3mm
Weight: 73g
Front Bearing: D8 x D3 x T4mm
Rear Bearing: D8 x D3 x T4mm
Mounting Holes: 4 x M2.5, 3.5mm deep
Recommended ESC: SeaKing 30A V4
Application: boats up to 45cm

Includes:
1 x SeaKing 2040SL 4000KV V2 brushless motor with water-cooling jacket
1 x User manual

Requires (not included):
1 x Brushless ESC - HOBBYWING SeaKing 30A V4 ESC recommended
Water-cooling tubing connected to the boat's cooling system (the motor must be water-cooled)

Make sure the water-cooling pipes are connected reliably - running without cooling will overheat and damage the motor.
Stop using the motor if it exceeds 100 deg C / 212 deg F; high temperature weakens the rotor and can damage the motor.
The three motor wires can be connected to the ESC in any order. To reverse rotation, swap any two motor wires or change the ESC's Motor Rotation setting.

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