The PRO DPF Series has lifetime backed stainless steel construction, a muffler-less design and mirror polished welded intercooled tips. The best value system with a no hassle emissions legal design. Aluminized Custom Builder Turbo-Back Exhaust System ; 4 in.; Incl. Inlet Pipe/Tailpipe/5 in. Round Polished Tips; Dual Same Side Behind Passenger Rear Tire; Black Coated; The PRO Series Features stainless steel construction with a satin finish muffler and no tip. No hassle emissions legal design.