Akrapovic Evolution Race Line (Titanium) for Nissan GTREV EvolutionThis system has been developed to offer Nissan GT R owners the opportunity to tune their car to its full potential. It is constructed using high grade lightweight titanium alloys, with individual parts cast in the in house foundry. The one piece construction link pipe has an increased diameter, measuring 101. 6 mm (4 inches) for optimized exhaust gas flow. It is beautifully completed with larger handmade high quality carbon fibre tailpipes