KPMI, exhaust valve guide. Cast iron. +.002″

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).