Use this exhaust system when you want to enhance your driving pleasure on the track or daily commute. It's perfect for BMW 330i (2019 - 2024) and 430i (2021 - 2024) base model owners who love a more powerful exhaust sound. After the secondary catalyst, it has a single 3 - inch route that splits into dual 3 - inch tip outlets. It also saves weight and cost, making it a great upgrade for your car.