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 16 gauge stainless steel tubing
- 2.50 in. manifold downpipe
- Chevrolet Big Block, GM A-Body, B-Body and F-Body
- Pipes designed to be used without heat riser