This 3" into dual 2.25" diameter Borla(r) Cat-Back(tm) system was specifically designed to enhance the power and sound of the Ford F-150 equipped with 2.7L and 3.5L Engines. The split rear exit configuration replaces the single factory tail pipe, and has single 4" round black chrome on T-304 stainless steel tips on each tail pipe. Using Borla(r) 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. A system with bright chrome on T-304 stainless steel tips is also available. 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 aggressive ATAK(r) sound without any drone. Additional systems are available with different options for sound level, tip finish and tip Exits. Add Adapter 60556 for Crew Cab with Standard Bed (6' 7") 157.2" Wheelbase vehicles. Add Adapter 60564 for Extended Cab with Long Bed (8' 2") 164.1" Wheelbase vehicles. All this is backed by our unsurpassed Million Mile Warranty. System Features: Cat-Back(tm) System Split Rear Exit 4" Black Chrome On T-304 Stainless Steel Tips ATAK(r) Sound Level T-304 Stainless Steel Construction Bolt-On Installation Million Mile Warranty