As an authorized AMP Research dealer, Extreme Car Audio located in, Grand Rapids, MI is committed to helping you choose the right AMP Research product for your vehicle. With four PowerStep lines, BedSteps, Bed Xtenders and accessoriesExtreme Car Audio will help you select all the options you need for your lifestyle. Extreme Car Audio has a wealth of experience when it comes to power running boards, bed steps and bed extender products.Extreme Car Audio offers the best choice of PowerSteps, BedSteps, BedXtenders and accessories. They also sell and install other truck, Jeep & SUV accessories. If you want the best deal on a brand new AMP Research product and want it done right and quickly then head over to Extreme Car Audio in Grand Rapids, MI your local preferred AMP Research dealer.