For S&S, Screaming Eagle, Ultima, SE & Jims
Light and strong with optimum airflow. Stellite tips for rocker applications. Black Diamond Valves feature one piece forged stainless steel valves impregnated with a special German process to improve wear and reduce friction. Also provides resistance to corrosion and improves wear.
Manufactured by Kibblewhite Precision Machining.
Not sure which you need, view or download the chartfrom the Goodson catalog.