Unleash more torque and horsepower with this Twisted Steel Header for your RAM 1500 HEMI. Optimized, 1 - 58 mandrel bent, 304 stainless - steel tubing improves exhaust flow for quicker throttle response and overall performance. Mandrel bent, 1 - 58 16 - gauge 304 stainless steel tubing construction for unrestrictive flow resulting in more aggressive throttle response and increased passing power. 100 MIG welded by certified craftsmen provides the strongest welds for long lasting strength and durability. Designed with true 4 - to - 1 mitered merge collectors to eliminate flow - block turbulence created by formed collectors. 38 thick, 1 - piece flanges prevent warpage to ensure a leak - free seal over the life of the vehicle. Includes quality gaskets and hardware. These headers retain your stock catalytic converters and are a direct bolt - on installation which requires no cutting or drilling to provide a hassle - free installation.Unleash more torque and horsepower with this Twisted Steel Header for your RAM 1500 HEMI. Optimized, 1 - 58 mandrel bent, 304 stainless - steel tubing improves exhaust flow for quicker throttle response and overall performance.