When re-building any four-stroke engine replacement of the valves is a sensible precaution. The InletValve has a hard life and can go brittle with the high temperatures leading to a Valve stem failure! This is a disaster for the engine allowing the Valve head and piston to destroy each other!
Need exhaust valves as well? Check out: 14721302010
Please check the part number is compatible with your engine before ordering!