AMP Research Bedstep Flip Down Bumper Bed Step Model 75330-01AAMP Research Bedstep Flp Dwn Bmpr Stp 23 F 250 350 Model 75330 01A Go ahead and step on it. Bedstep is a real time saver. Not to mention knee and back saver. Strong and rugged, this non slip, retractable bumper step quickly flips down with the nudge of a foot providing a faster, easier and safer way to load or unload your pickups cargo. Supports up to 300 lbs. Frame mounts under the rear bumper so it works even with an open tailgate or when towing.