Before Buying Contact US! Everything is custom made! Key Attributes: Model Compatibility: For Audi S4/S5 B8/B8.5 (3.0T) from 2013 to 2019 Material: High-quality SUS304 Stainless Steel Surface Finish: Brushed for a sleek and modern appearance Welding: Utilizes high-performance TIG Welding for enhanced strength and durability Fitment: 100% fit to the car chassis, ensuring seamless integration with existing systems Product Features: Performance catback exhaust system Equipped with a vacuum valve for adjustable exhaust sound Comes with an exhaust muffler for optimal sound control Includes a remote control for convenient operation, allowing users to switch exhaust settings effortlessly Performance Benefits: Power Improvement: Increases horsepower by approximately 5-10 HP, enhancing overall vehicle performance and responsiveness Warranty Origin: Warranty: 3 years, offering peace of mind regarding product quality and longevity Place of Origin: Guangdong, China