This is the Team Integy Motor Heatsink with side mount cooling fan.
This heatsink snaps onto the motor can.
FEATURES: This gun metal color motor heatsink has a built-in fan
Alumimum heatsink construction
INCLUDES: Motor heatsink assembly with attached fan and BEC connector
REQUIRES: 540 sized motor
SPECS: Length: 1.9" (48mm)
Width: 1.5" (38mm)
Height: 1.6" (40mm)