Abstract: The present invention provides a side step bar mounting system comprising at least two mounting assemblies wherein each of the assemblies includes a first bracket, a second bracket, and an isolator assembly comprising a first bushing, a second bushing, a sleeve, at least one isolator washer and a fastener; the first bracket includes a vehicle mounting feature for attaching the first bracket to a vehicle structural member and a fastener feature for attaching to the fastener; the second bracket includes an entry assist member feature for attaching the second bracket to an entry assist member; each of the second bracket, the first bushing and the second bushing includes a sleeve feature for accepting the sleeve; the sleeve includes a channel for allowing the fastener to go through the channel.