Banks Power 02-11 Chevy 4.8-5.3L Torque Tube System non-A/IVirtually indestructible 100 percent stainless TorqueTubes maximize exhaust extraction, unleashing gobs of torque that'll jam you into the seat and haul you up the grade. Banks heavy wall 400 series stainless TorqueTubes include 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