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Your original master cylinder will not fit our Hydroboost systems. We highly recommend using one of the two master cylinders we supply. If you choose to buy your own master cylinder please call Van for applications that will fit your Hydroboost. Master cylinders for CJs and YJs will fit your existing brake lines, if you're buying for a TJ a line kit will be needed (sold below).

If you have any questions, give us a call at 800-256-6295.
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Master Cylinder for ½ ton and smaller calipers (1 1/8th bore) Master Cylinder for ¾ ton and bigger calipers (1 5/16th bore) TJ Line Kit (from master to proportioning valve, stainless steel braided)
good for 2 wheel and 4 wheel disc ood for 2 wheel and 4 wheel disc These lines are needed, as the original lines won’t fit our master cylinders.
YJ Line kit (from master to proportioning valve, stainless steel braided) Two-wheel disc valve kits Four-wheel disc valve kits.
Two-wheel disc valve kits
Our Price: $125.00
comes with mounting bracket and lines to the master cylinder comes with mounting bracket and lines to the master cylinder