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KPMI, intake/exhaust valve guide. C630 bronze. STD

C630 bearing bronze. Standard size: 0.5620" O.D. (14.27mm); 0.3090" I.D. (7.85mm); 2.00" OAL (50.8mm). 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.

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

Fits: >

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