The 4-Inch Resonator-Back Exhaust (S5247BLK) is a high-performance exhaust system designed for single side exit vehicles with a tour profile. It features a 4-inch diameter for maximum airflow and a resonator-back design for improved sound and performance. This exhaust is made from durable materials and is easy to install, making it a great choice for those looking to upgrade their vehicle’s exhaust system. Its key features include a single side exit, tour profile, and a sleek black finish. With its enhanced sound and performance, this exhaust is a must-have for any car enthusiast.