Virtually 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 to draw in more air. Includes all required hardware. 5-Year Limited Warranty

Torque Tube Exhaust Header System for use with 1999-2001 Chevrolet/GMC 4.8-5.3L, Non-A/I (no air injection)

• Virtually indestructible 100 percent Stainless Steel
• Mandrel-formed tubes tune exhaust flow for maximum torque
• Maximizes exhaust extraction
• Flanges welded on both sides, then milled flat
• Seamless high-velocity collector
• Pulls exhaust and slashes backpressure
• Includes two full exhaust manifold assemblies
• 5/8 inch thick flanges won't warp or flex
• Non-A/I (no air injection)

Emissions compliant: CARB EO D-161-106

US Patent #6,634,171 B1