KPMI, prowadnica zaworu dolotowego/wydechowego. Żeliwo. +.001″

Cast iron offers maximum durability and wear resistance for long distance touring. The standard since the invention of the piston engine. Note: Standard non-oversize dimensions (for reference only) are 0.5952″ O.D. (15.12mm); 0.3715″ I.D. (9.44mm); 3.135″ OAL (79.63mm).