JIMS, top center case bolt facer tool - 99-17 Twin Cam (with big bore engines) (NU) 929035 Forged and CNC-machined from 6061-T6

Forged and CNC-machined from 6061-T6 aluminum

where stock heads flow about 124 cfm @ 10"

This are Panhead look alike heads

Seat is built on a one-piece marine-grade fiberglass baseplate

capacities for nuts: 46 mm

JIMS, top center case bolt facer tool - 99-17 Twin Cam (with big bore engines) (NU) 929035 Forged and CNC-machined from 6061-T6Used to spot face the center right case of big bore engines, so the bolt head will seat flat on the crankcase surface. The threads of the center right crankcase bolt becomes compromised from the larger cylinder spigot bore diameter. Used with 961573 JIMS Through Bolt Kit to get the necessary case bolt retention. Note: JIMS 961573 center through bolt kit is sold separately.