Kibblewhite KPMI, exhaust valve guide. C630 bronze. STD

Description

Kibblewhite KPMI, exhaust valve guide. C630 bronze. STD

84-99 Evo Big Twin; 99-04 Twin Cam; 86-03 XL Sportster (NU)

C630 bearing bronze. Size: 0.5620″ O.D. (14.27mm); 0.3090″ I.D. (7.85mm); 2.00″ OAL (50.8mm). Comes with special shoulder for ease of installation. Takes OEM valve seals. Shortened to accept valve lifts up to .600″. 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.

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