These valves are the biggest size valves you can run with the stock L28 valve seats. Another added value these valves bring is that they are longer—allowing you to run big lift camshaft (i.e. .560 lift) without the retainers binding with the stem seals. These valves are found in our Stage-4 engines. They are made with the latest materials and engineering available.
Diameter: 45/36.5mm Length: 118mm