Akrapovic Slip-On Line (Titanium) for Porsche Cayman (981)Akrapovic Slip On Line (Titanium) for Porsche Cayman (981) Engineers have spent months developing a Slip On exhaust system that takes the driving experience to a completely new level. This fully titanium exhaust system with three muffler configurations saves weight at the rear axle, additionally enhancing the handling with more power and torque gained with improved gas flow dynamics, reduced back pressure, and a more linear power curve. Power gains