C7 Corvette GS/Z06/ZR1 - Catback Ultimate NPP Valve Control:Vacuum Valve Control Individually CNC flanged 1

Individually CNC flanged 1

First pre-order sold out

Full 3" straight through with the valve open (OEM and others are a 2

If you want to run any other exhaust with our headers

C7 Corvette GS/Z06/ZR1 - Catback Ultimate NPP Valve Control:Vacuum Valve Control Individually CNC flanged 1Ultimate means ultimate. Larger diameter than any "extreme" system on the market. The INSIDE diameter of this exhaust is the OUTSIDE diameter of a 3" exhaust. Essentially larger than 3" straight pipes. If you purchase the exhaust without our headers, you will need to use adapter sleeves that will be included. Compatible with the OEM NPP control or vacuum control for non NPP cars.