The COMP Cams 1.810" spring seat cutter expands the spring pocket to a 1.810" outer diameter and trims the valve guide area to a .630" inner diameter. It is intended for head modification where larger spring seats are required and is noted as ideal for use with COMP parts 26028 and 26030; an arbor/pilot in 5/16", 11/32" or 3/8" valve sizes is required for operation.
COMP Cams 1.810 Spring Seat Cutter For