Complete kit for your Scout II. Dramatically helps braking performance. Kit is complete except for pump... Call with any questions about applications or installation.
1. Vacuum boosters put out between 700-1,000lbs of pressure. That's the amount of pressure added to your braking capabilities (how much more pressure you can put on the brake pedal compared to manual brakes.).
2. Hydroboosts put out between 2,400-2,700lbs of pressure. This gives you 2-3 times the power of a vacuum booster. This is enough power to stop you in almost any circumstance, including towing. This system will only put out as much pressure as you demand. Step on it easy to come to a slow stop, hard to lock up all 4 tires. replaced). The hydroboost can start leaking fluid, but even so you won't lose power. Worse case scenario is you'll need to add fluid to your pump. So where a vacuum booster totally fails the hydroboost will still work even if it starts to leak. The smaller the master cylinder bore the less foot pressure it takes to stop your vehicle, but the more stroke (how far you have to press down) it takes to actually stop it. The bigger the bore the more pressure it takes but the less stroke needed. For example, if you put a 5/8 bore master cylinder on it would feel like power brakes, but you wouldn't have the stroke to actually stop. If you put a 2 inch bore you'd stop in half an inch, but it would be so hard you'd never actually be able to get the vehicle to stop (it would feel like stopping a tank with your feet).

Designed for the following vehicles

Scout II (All Years)