These are a great starting point for any 12V VR6 cylinder head build. High quality forged stainless valves are black nitrated for maximum hardness and smoothness. For the price, these are an excellent replacement for stock valves. For the very highest performance builds, we can also supply these valves in +1.8MM oversize for maximum flow (machine work required). These valves are back cut for flow and black nitrided to reduce friction and increase durability. nnThis is for a set of 6 Supertech exhaust valves.
