Akrapovič Titanium Slip-On Exhaust System 2017+ Porsche 911 Carrera/S/4/4S/GTS (991.2)Built from high grade, heat resistant, ultra lightweight titanium alloys which are sandblasted and coated for durability the Slip On Line is the first step in exhaust modification. Delivering weight savings in excess of 35% over stock, while increasing performance, the exhaust uses the latest innovative technologies in its construction, including parts cast in Akrapovis in house foundry. It is perfectly tuned to give a unique sound to the turbocharged