KPMI, intake valve guide. Cast iron. +.010"

Cast iron offers maximum durability and wear resistance which is perfect for long distance touring applications. It is the standard since the invention of the piston engine. 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 Twin Cam; 04-21 XL Sportster; 08-12 XR1200; 03-10 Buell XB (NU)