Topeak Rear Rack Light Adapter

thingiverse

This is a straightforward bracket that attaches to a Topeak rear bike rack and enables a universal snap-in light to click into place securely. I have been using this setup for over a year now, and it has performed flawlessly, keeping my NiteRider light firmly in place. Not being satisfied with the available options from Topeak, I decided to design something better myself. The bolt specifications are 10-32, but an alternative size of 10-24 will also work; however, you'll want to use a nut that comes equipped with a built-in lock mechanism for added security.