Alloy Heat Sync with 5V Cooling Fan for 1/10 Car 540 550 3650 Size Brushless Engine Motor

This heatsync fit for 540 and 3650 size motor, it will come with a 5V cooling fan, to protect your motor. Keep your temperatures in check and your motor running efficient and cool with our heatsink and cooling fan combos. This cooling fan can power up from the receiver spare port, very easy to use. Material: durable aluminum alloy and hard plastic.