Yeah Racing Aluminum 540 Size Motor Heat Sink w/Cooling Fan (Red)The Yeah Racing Aluminum 540 Size Motor Heat Sink with Cooling Fan, is a great option for those wanting to keep their investment cool and help consistency. By using this fan, with the included power wire, you will be able to achieve cooler temps on your 540 size motor. Package includes one heat sink, one fan and one power wire.

Features: 

• Fits 540 size motors
• Heat sink made from aluminum

Specifications: 
Length: 34mm (with fan)
Width: 32mm
Height: 37mm
Voltage: 7.2v