Borla Cat-Back Exhaust System - S-Type 2015-2020 Ford F-150 2.7L 3.5L V6 (EXCEPT Raptor Limited) 5.0L V8 2018-2020 3.3L V6 Automatic Transmission 2 4 Wheel Drive Ext. Cab Std. Bed (6 7 ) 145 Wheelbase Crew Cab Short Bed (5 5 ) 145 Wheelbase. Add Adapter 60556 For Crew Cab Std. Bed (6 7 ) 156.8 Wheelbase Or Adapter 60564 For Ext. Cab Long Bed (8 2 ) 163.7 Wheelbase. EXCEPT Raptor Limited. Add Adapter 60556 for Crew Cab Standard Bed (6 7 ) 156.8 wheelbase or Adapter 60564 for Ext. Cab Long Bed (8 2 ) 163.7 wheelbase. This system features a Black Chrome finish on T-304 stainless steel tips. Using Borla Stainless Steel Polish p# 21461 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. Borla Cat-Back and Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power driving excitement fuel economy and the distinctive Borla Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium high-quality T-304 stainless steel superior to T-400 series knockoffs (such as 409) to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow power and precision computer numeric control (CNC) manufacturing ensures an accurate fit. Best of all Borla stands behind every system with a Million-Mile Warranty. Just what you d expect from the world s most experienced (and most winning) exhaust brand.