Description
Kibblewhite KPMI, intake/exhaust valve guide. Cast iron. STD
36-47 Knucklehead (NU)
Cast Iron. Standard size: 0.6440″ O.D. (16.37mm); 1.050″ I.D. (26.67mm); 1.900″ OAL (48.26mm). Cast iron is great when it comes to maximum durability and wear resistance. It is perfect for long distance touring applications. It is the standard since the invention of the piston engine.
