Bestop Power Step Power Step by Bestop running boards are triggered by an electronic signal from the vehicle's factory door sensors and extends to a convenient stepping height in one second. The Power Step running boards are powered by a heavy-duty, weatherproof motor. The Power Step is lowered when any door is opened and Power Step retracts when any door is closed. At the optimal ergonomic height for proper entry and exit without sacrificing ground clearance, it provides a natural step similar to steps found in your home. All AMP RESEARCH Power Step by Bestop running board components are OEM quality and corrosion-resistant for long service life. The AMP RESEARCH Power Step by Bestop is designed to operate normally in all weather conditions and is built to handle up to 600 lbs. per side.