Stainless steel exhaust pipe reducer 57 / Ø 51 mm Stainless steel exhaust pipe reducer 57 / 51 mm Stainless steel reducer for pipes from 57mm to 51mm Reducer tube made of high quality stainless steel to adapt different pipes You would like to make your own exhaust muffler / silencer according to your own wishes and dimensions? We supply you with the necessary materials. End plates, perforated tubes, bends, V / Band and 2/3 / hole flanges, or the glass wool or stainless steel wool for the perfect insulation effect. With us you will find what you are looking for. Reduction: 57 / 51 mm