Use this exhaust when you're looking to upgrade your Ford F-150 for better performance on the road. It's great for truck enthusiasts who want a reliable and long - lasting exhaust system. The system features 3 - inch cat back and 2.5 - inch dual split rear design, made from T409 Stainless Steel tubing. It fits 2021 - 2024 Ford F - 150 models with 2.7L/3.5L Ecoboost and 5.0L engines, including various sub - models like King Ranch, Lariat, etc.