Acura NSX 91-05 Titanium V2 2.5 Inch Piping Exhaust SystemPride Exhaust Acura NSX V2 2. 5 Inch piping Cat back Exhaust System. This system has larger piping over the standard V2 system. These are designed and made for forced induction or full N A built engines. This is a direct bolt on to all 1991 1996 NSX's. The 1997 2005 NSX requires an adapter kit, which is sold separately. This exhaust will fit perfectly on the 1991 2001 OEM rear lower valance and also 2002 2005 OEM valance. It will also fit aftermarket