Akrapovic Slip-On Race Line (Titanium) for Porsche 718 Cayman GT4 RSSO Slip OnThis product is constructed from high grade titanium with a sandblasted finish. Two valves with housings made in the in house foundry tailor the sound, providing a smooth rich tone at lower speeds, rising to a true sporty sound at higher revs. The tailpipe diameter is larger than standard stock tailpipes, with a coated outer and a cast inner shell without coating which will react with heat to take on an attractive blue colour. Each tailpipe