Traxxas TRX4 ESC Power Button Remote Lever - Turn it on without taking the body off!

thingiverse

This allows the ESC button to be actuated with the stock body shell still clipped on. Useful when you want to power on / off the truck without removing the body shell. If you could see the LED on the ESC you could change modes too, but the body is pretty opaque. You could drill a hole large enough to see the light, however. The bracket fits under the mounting arm for the rock slider on the left side and has a small hook that holds the other end of the bracket under the ESC platform. This allows a clean install without the need for a chemical bond (double sided tape) as a mechanical bond is must stronger and less likely to fail. The only additional hardware required is a 3mm cap screw, the same that holds the rock sliders to the chassis. Most hobbyists will have several of these lying around.