Akrapovic BMW C650GT 12-14 Stainless Slip-On Exhaust Slip-Ons represent the first step in the exhaust system tuning process, and they offer a great balance between price and performance. Change the nature of your bike by adding more power, improved performance, and the unique Akrapovic sound. Everything packed in stylishly designed Slip-On exhaust systems. Race-proven materials. EC Type Approval