1/8 1/10 Scale Motor Heatsink - Blue
 

This a very high quality thick heatsink. This wont snap into place like others due to the thicker material. Slide on to fit.

To fit 540 / 550 or 560 motor cans - 35mm diameter.
Holes are drilled to fit a square fan.  Measurements:
 
Top right to top left 32mm (centers)

Top right to bottom right 32mm.

 
Heatsink measures 55mm long.