KPMI, exhaust valve guide. C630 bronze. +.010"

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. Note: Standard non-oversize dimensions (for reference only) are 0.5620" O.D. (14.27mm); 0.2750" I.D. (6.99mm); 2.02" OAL (51.31mm).

Fits: > 05-17 (NU) Twin Cam A/B; 04-20 XL Sportster; 08-12 (NU) XR1200; 03-10 (NU) Buell XB