Exhaust valve for the TVR Speed 6 engine. This is a high quality exhaust valve to fit standard TVR Speed 6 engines. This exhaust valve is made to very high specifications for and is plasma gas nitrided to give outstanding wear charateristics. Manufactured from 23-8N (EV16) grade austenitic stainless steel this exhaust valve exhibits extremely good high temperature strength. This is a certified high quality product from one of the worlds major valve manufacturers and offers significant benefits over the standard product from TVR. The standard TVR exhaust valve is one of the weak elements of the TVR engine with its ability to deteriorate in the high temperature gas flow so a high performance replacement is a must for EVERY Speed 6 rebuild.