This Rock Krawler retrofit kit converts a Pro Flex joint to an Adventure Series joint sized 2 5/8" wide with a 16mm bore. It supplies the interfacing components needed to adapt joint types so builders can reuse existing arms or housings while achieving correct fitment where a 16mm bore is specified.
Rock Krawler Pro Flex Joint to Adventure Series Joint Retrofit Kit (2 5/8 Wide - 16MM Bore)