Frame-mounts, under the rear bumper so it works even with an open tailgate or when towing.
. AMP Research BedStep Retractable Bumper Step - 75308-01A BEDSTEP retractable bumper step flips down with the nudge of a foot providing a faster, easier and safer way to get into your truck bed to load or unload cargo. 11-14 Chevy Siliverado 2500/3500;11-14 GMC Sierra 2500/3500;AMP Research BedStep bumper step;High-strength die-cast, aluminum-alloy linkage components;Military-spec, anodized and Teflon finish to resist corrosion;Precision, stainless-steel pivot pins for rock-solid stability;Non-slip, glass-reinforced composite step pad, big enough for two large boots;300 Lb. load capacity;Easy bolt-on installation;3-year/36,000-mile warranty;Designed and Made in the USA;California Residents: WARNING Features a high-traction nylon composite step pad for sure footing.