While we cannot guarantee compatibility, our customers have found them to work well together. We have never had a return due to non-compatibility. The following post by a customer is a useful reference:
PLEASE NOTE: At the end of that thread, we caution that with the Piranha Bar, the Edge Tamer is no longer flush with the edge of the bucket, and care should be taken to ensure the bolt is still tightened to a flat surface (i.e., the bottom of your bucket), and not to a beveled surface (i.e, the lip or a weld). Doing so could cause the Edge Tamers to slip off, particularly when carrying a load using the Edge Extenders.