OEM part number Harley-Davidson: 18031-86. Kibblewhite nitrided timing valve: Black Diamond™ valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction: all valves are compatible with OEM and KPMI® valve guides and spring kits. Compatible with leaded and unleaded fuels: can be run in cast-iron and bronze-type huides at close tolerances for maximum oil control and heat dissipation. Keepers not included.
Features:
- lightweight
- higher corrosion resistance
- lower friction
- improved wear properties
Dimensions:
- head diameter: 40.26mm(1.585")
- stem diameter: 7.88mm(0.3100")
- length: 115.57mm(4.550'')
- tulip angle: 23°
- type: intake
- model: standard