This MBRP exhaust system is designed for 2018 - 2021 Kia Stinger GT, GT1, and GT2 models. Whether you're cruising on the highway or taking your car to the track, this exhaust will enhance your driving experience. It's great for car enthusiasts who want better performance on a budget and live in dry areas. The tubing has a 2.5 - inch diameter and is mandrel - bent for smooth exhaust flow.