Akrapovic Exhaust System for Porsche 911 Carrera S/4/4S/GTS (992)S PO TI 14 SO Slip On Taking design to new limits, the Slip On Race Line (Titanium) is beautifully finished with unique tailpipes to showcase a variety of surfaces, emphasizing the latest in exhaust technology and production. From the outer part, which is sandblasted and coated for increased durability and longevity, and incorporates a laser engraved Akrapovic logo, to the inner tubing, which is polished on the outside and has a black coated interior,