This Borla Cat-Back(tm) system was specifically designed to enhance the power and sound of the Ford F-150 equipped with the 3.5L PowerBoost engine. It includes 4″ bright chromed T-304 stainless steel tips and a split rear exit configuration. Add Adapter 60556 For Crew Cab With Standard Bed (6′ 7″) 157.2″ Wheelbase vehicles. The entire system is made of T-304 stainless steel and utilizes computer numerical control (CNC) manufacturing techniques that ensure an accurate fit. This system features the S-Type sound that gives you an aggressive sound with no drone. It is also available with black chromed T-304 stainless steel tips. All this is backed by our unsurpassed Million Mile Warranty. System Features: Cat-Back(tm) System Split Rear Exit 4″ Bright Chrome On T-304 Stainless Steel Tips S-Type Sound Level T-304 Stainless Steel Construction Bolt-On Installation Million Mile Warranty