Kibblewhite Nitrided Valves For Harley Constructed from one-piece stainless steel with stellite tips, these valves undergo a unique nitriding process, enhancing their wear resistance and reducing friction. This treatment achieves a .002 depth with a .0002 surface layer, offering superior protection against corrosion compared to traditional hard chromium and electrolysis nickel-plating methods. Features: Lightweight with profiles that provide excellent flow characteristics Compatible with leaded and unleaded fuels and can be run in cast iron- and bronze-type guides at close tolerances for maximum oil control and heat dissipation Oversize Sold individually Made in the USA