As an authorized AMP Research dealer, Muffler Doctor Auto Clinic located in, Cottage Grove, MN is committed to helping you choose the right AMP Research product for your vehicle. With four PowerStep lines, BedSteps, Bed Xtenders and accessoriesMuffler Doctor Auto Clinic will help you select all the options you need for your lifestyle. Muffler Doctor Auto Clinic has a wealth of experience when it comes to power running boards, bed steps and bed extender products.Muffler Doctor Auto Clinic 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 Muffler Doctor Auto Clinic in Cottage Grove, MN your local preferred AMP Research dealer.