Slip-Ons are the first step in the exhaust tuning process and offer a great balance between price and performance. Change the nature of your bike by adding more power, improved performance and that unique Akrapovič sound. All wrapped up in elegantly designed Slip-On exhaust systems. Taking design very seriously results in a beautifully crafted exhaust system. The muffler outer sleeve is made of titanium, while the end cap is made of carbon fibre. Race-proven materials.