Flowmaster's manifold downpipe kits are designed for the person who wants to use a Header-back exhaust system while using the factory exhaust manifolds. Utilizing mandrel bent 409S stainless steel tubing and high quality flange gaskets, Flowmaster's manifold downpipe kits are designed for the perfect leak free fit. Mandrel Bent 16ga 409 Stainless Tubing 2.5 in. Manifold Downpipe Chevrolet Small Block/GM A-Body/F-Body Pipes Designed To Be Used w/o Heat Riser Premium Flowmaster Quality Lifetime Limited Warranty Additional Attributes: GTIN: 00700042025749 Bend Angle: N/A Center Line Radius: N/A Converter Quantity: 0 Gauge: 16 Inlet Inside Diameter: 2.500 in. Leg/Straight Length: N/A Material: Stainless Steel Material Gauge: 16 Pipe Material: Stainless Steel Position: N/A Single or Dual: Dual System Type: Down Pipe Back Tube Diameter: 2.500 in. Tubing Diameter: 2.500 in. WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov Extened Information: Emissions : Electronically Announced Life Cycle Status: Available To Order Packaging: Quantity of Each: 1 Package UOM: EA Dimension: 37.7500 x 16.0000 x 9.5000 inches PDF: 81068