JIMS, Evo compression release valve tool

JIMS, Evo compression release valve tool

Drill fixture tool. Used to machine Twin Cam heads so heads will accept the JIMS mechanical compression release valves (MCS 978426). Tool installs on front or rear head, with or without valves installed. Simply drill, spot face, tap and compression release valves can be installed. Note: 978425 10x1.0mm thread tap tool must be ordered separately.

Fits: > 99-17 Twin Cam (excl. Twin Cooled heads) (NU)