40A brushless water-cooled ESC, fully waterproof and water-cooled design, supports 2-4s power supply, and can be used with various types of batteries.
qaqqvq
QAQQVQ 55 MPH Remote Control Boat with 8S Brushless Waterproof Motor for Pools and Lakes,2.4 GHZ 6CH RC Boats for Adults
Increases the stiffness and strength of the hull. The grease cup prevents grease from spreading inside.