TORQUETUBES MANIFOLD ASSEMBLY Banks' 100 percent stainless TorqueTubes are virtually indestructible. Includes two full exhaust manifold assemblies, each with a seamless high-velocity collector. Unlike the restrictive stock setup, Banks TorqueTubes literally pull out the exhaust, unleashing greater torque and helping the intake stroke to draw in more air. Key Features: Virtually indestructible 100 percent Stainless Steel Mandrel-formed tubes tune exhaust flow for maximum torque Maximize exhaust extraction Flanges welded on both sides, then milled flat Seamless high-velocity collector Pulls exhaust and slashes backpressure Includes two full manifolds and stainless Y-pipe 5/8 inch thick flanges won't warp/flex No sealant/gaskets needed No need for factory heat shields Runs cooler to protect expensive plug wires US Patent #6,634,171 B1 50 State Compliant CARB E.O. D-161-41