BMW m20 High Performance Exhaust Valve
High quality stainless racing valve, hard chrome coated stem, hardened steel tip, 45* seat/ 30* back cut.
The exhaust valve is not the restrictive part of the m20 head so fitting large over size is not generally required, however better arrangement of seat angles can be very beneficial! These exhaust valves are 0.5mm oversize to allow for cutting fresh multiple seat angles without compromising installed height. Also leaving room for very large intake valve without running into valve clash at high cam overlap.
Will fit standard seat inserts on all m20 head castings.