Exhaust Components Specs Mandrel Bends Exhaust Fabricators CNC Header Flanges Merge Collectors Stainless Bellows V-Band Clamps Sealing Flanges Formed Collectors Accessories; Tube Bending & Fabricating Service; SPD offers a complete line of exhaust components for Exhaust Fabricators ranging from Mandrel Bent Tubing, Mandrel Bends, CNC Header Flanges, Merge Collectors, Collector Flanges, Stainless Bellows, V-Band Clamps and Sealing Flanges and Formed Collectors & Accessories; Racing & Offroad Vehicles ...