BBK 1-5/8" Chrome Plated Short Tuning Length Exhaust Tips Fits Ford F-150/Expedition 5.4L Fits All BBK Short Varying Length 99-03 F150/Expedition 5.4L Fittings Take 1 5/8" CNC mandrel bent tube fabrication for unrestricted airflow. It has a one-piece laser cut flange for added strength and durability. All BBK exhaust tips are pressure tested to ensure leak-free performance. Every BBK short trim length exhaust tip is designed and dyno tested at BBK headquarters in Southern California to maximize your vehicle's performance potential.