Kibblewhite Triumph 500 Unit Black Diamond Valve/Guide Kits


Black Diamond 500 valve and guide kit
Kibblewhite Black Diamond™ valves are the best you can get for your Triumph motorcycle. These specially impregnated forged stainless valves have proven to have superior wear resistance and reduced friction than that of hard chromium or electrolysis nickel plating. When used with these C630 bronze guides and properly installed and finished, much tighter tolerances than factory can be used successfully for quieter operation, less friction, and much longer service life.

This set consists of 2pc 1.540" intake valves, 2pc 1.325" exhaust valves, and 4pc standard .5010" guides.

If you are building a Triumph Unit 500 or need to rebuild a head, these are the highest quality parts you can use. Oversize valves and guides are available for the same price. We ship worldwide and will answer any questions you may have that are not covered in the installation notes.
Intake valve
head diameter 1.540"
Stem diameter 0.3100"
tulip 23º
length 3.480"
Exhaust valve
head diameter 1.325"
Stem diameter 0.3095"
tulip 24ºR
length 3.425"

Intake/Exhaust guide (see above diagram)
A 0.560"
B 0.610"
C 0.620"
D 1.160"
E 0.550"
F 0.3105"

For oversize valve requirements, please use the drop down menu below.