Uma Racing has produced these lightweight Stelite coated stainless steel valves for racing applications. Lighten your valve train and increase maximum engine rotation speeds. This high performance products are designed from a single piece of forged stainless steel alloy. Stellite is a hard coating applied to valve stem tips and faces to provide a hard surface with high wear resistance. Sold in a pair of 24mm intake and 21mm exhaust valves for the Kawasaki KSR110/KLX110 bikes.