Description
Kibblewhite KPMI, exhaust valve guide. C630. STD
79-84 80″ (1340cc) Shovelhead (NU)
C630 bearing bronze. Standard size: 0.6250″ O.D. (15.88mm); 0.3745″ ID (9.51mm); 1.91″ OAL (48.51mm). C630 bearing bronze is a tough nickel-aluminum-bronze alloy typically used in high performance and racing applications where rapid heat transfer from the valve to head is important.
