Akrapovic Audi R8 5.2 FSI Coupe/Spyder Slip-On Exhaust System w/ Carbon Tip Set (Titanium)The Slip On Line exhaust system for 2016 2018 AUDI R8 5. 2 FSI COUP SPYDER is constructed from an ultra lightweight high grade titanium alloy, boosting the R8s power to weight ratio and handling characteristics. The Slip On Line (Titanium) has been precision engineered to improve throttle response and increase both the power and torque outputs. The performance exhaust system is designed to reduce back pressure to almost half of the stock levels