Akrapovic BMW M 1000 RR 19-26, S 1000 R / M 1000 R 21-26, S 1000 RR 19-26 Slip-On Line Exhaust (Titanium) - S-B10SO11-CBTSlip 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. The GP styled Slip On Line system is a high performance system for race oriented riders. Made from titanium, a race proven material. The exhaust