As an authorized AMP Research dealer, Keystone 4X4 located in, Hamburg, PA is committed to helping you choose the right AMP Research product for your vehicle. With four PowerStep lines, BedSteps, Bed Xtenders and accessoriesKeystone 4X4 will help you select all the options you need for your lifestyle. Keystone 4X4 has a wealth of experience when it comes to power running boards, bed steps and bed extender products.Keystone 4X4 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 Keystone 4X4 in Hamburg, PA your local preferred AMP Research dealer.