Features:
1. Includes a 4092 1250KV motor with 40-L water cooling jacket, specially designed for 1000mm RC boat.
2. CNC aluminum alloy shell with anodic treatment is durable, wear-resistant and beautiful.
3. High-performance circulating water cooling jacket with inlet and outlet fittings allows the motor to work for a long time without burning out.
4. 4 poles with 12 slots design provides high torque and efficiency.
5. Copper winding with high purity maximizes efficiency.
6. Precision balanced rotor with high smoothness and accuracy for best reliability and maximum RPM.
7. O-ring seals for leak mitigation.
8. Precision engineered for maximum energy conversion.

Specifications:
Material: Aluminium Alloy
Color: As Pictures
Type: RC Accessory
Weight: 548g
Motor 
KV(RPM/Volt): 1250KV
RPM: 50000
Watt: 4200W
No-load Current: 2.6A
Max. Voltage: 37V
Diameter: 40mm / 1.57inch
Length: 92mm / 3.6inch
Shaft Diameter: 5mm / 0.2inch
Connector: 4mm golden banana connector
Water Cooling Jacket 
Item Name: 40-L Water Cooling Jacket  
Outlet Fitting Diameter: 4.5mm / 0.18inch 
Jacket Inner Diameter: 40mm / 1.57inch
Jacket Outer Diameter: 48mm / 1.9inch
Jacket Length: 72mm / 2.8inch

Package Include: 
1 x Motor 
1 x Water Cooling Jacket