
Valve Black Diamond™ by KIBBLEWHITE (manufacturer part no. 20-20325): a monoblock valve designed for demanding cylinder heads and heavy exhausts. Machined from stainless steel with a Stellite tip and subjected to a special nitriding process (depth 0.002" and surface layer 0.0002"), it aims to improve wear resistance and reduce friction in the valve train. Ideal for vintage/touring twins and customs looking for a robust and precise component for valve guidance.
Designed to reduce wear on the stems and seats, the Valve Black Diamond™ maintains lightweight profiles that promote good gas flow. In terms of fitting, it is suitable for the preparation and restoration of Harley-Davidson models (e.g. Breakout, Dyna Wide Glide, Dyna Low Rider 2017 in 1690 cc), as well as any vintage/road application adhering to the specified dimensions.