This exhaust is great for car enthusiasts who want to upgrade their vehicle's performance. Whether you're on a daily commute or hitting the track, it's a perfect fit. It's designed for 2022 - 2025 Honda Civic Si and 2023 - 2025 Acura Integra models. The tubing is 3 inches in diameter and has a 2.5 - inch dual split rear design with burnt end tips, made of T304 stainless steel for long - lasting use.