The Diamond Eye Performance 4-inch stainless tailpipe section is described as a DPF-back first section tail pipe with hangers intended for compatible exhaust setups. The product text indicates a 4in diameter and stainless construction, identifying it as a replacement tailpipe component for applications called out in the listing.
Diamond Eye Tail Pipe 4in 1ST SEC DPF-BACK SGL W HNGRS SS 6 7L 2500 LONG & MEGA CAB SHORT ONLY 14