These could be a good replacement for the factory ones.
goatfabrication.com
Long thread on Bronco6G

GOAT Bronco 4-Door Rock Sliders
COMING SOON. GOAT Bronco 6th Generation 4-Door Rock Sliders offer excellent rocker protection while offroading. They double as a great step into your Bronco while also deterring rock chips and door dings. Sub-Structure Mounted Fully Welded and Gusseted 1/4" Steel Plate Mounts 2" .134 Wall Steel...

Long thread on Bronco6G