I have remade the feet for the Wahoo Kickr v4 to allow for the side-to-side "Rockr" motion which is available on the new models.

You just need to cut a tennis ball in half to use as a damper and then 3/8 or 10mm (model dependent) by 40mm bolts to secure them to the frame.

I printed with PLA at 220 DegC with the fan at 100%, printer bed at 40 DegC, Use adhesion for the back foot as mine curled a little. I infilled at 80% to make it sturdy.