KPMI, prowadnica zaworu wydechowego. Brąz C630. +.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).