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AMP Research 21-23 Ford F-150 (Excl. Hybrid) PowerStep Smart Series 2019-chevrolet-colorado-z71-esi4212057 4212010 is a 4-pad rigidThe new Powerstep Smart Series is the latest innovation to bring more control for the electric powered running board right to your fingertips. Enjoy the in app flexibility to override your steps to stay up or down, as well as power on off the integrated or an auxiliary LED light system. Upgrades the Powerstep system to allow in app manual override of the deploying steps and LED lights, no more manual override switch Upgrades The System To Allow In App