The Akrapovič Evo Cat Back is a high-performance exhaust system designed for BMW vehicles. It is made of lightweight and durable titanium material, providing improved power and torque while reducing overall weight. This specific model, S-BM/T/1, is designed for a precise fit on BMW models and features a cat back design for enhanced exhaust flow and sound. It is a top choice for those looking to upgrade their vehicle's exhaust system for improved performance and a more aggressive sound.