Skip to product information
1 of 3


Hydraulic Master Kit for 65-66 Mustang (Power Brakes & Hydraulic Pedal) for an All Wheel Disc Brake Car

Hydraulic Master Kit for 65-66 Mustang (Power Brakes & Hydraulic Pedal) for an All Wheel Disc Brake Car

Regular price $1,345.00 USD
Regular price Sale price $1,345.00 USD
Sale Sold out

This kit includes all major components(see all 3 pictures) to upgrade to power brakes and hydraulic clutch!

  • MustangSteve Design Pedal Support
  • Revised Power Brake Pedal
  • Power Brake Booster
  • All-Wheel Brake Master Cylinder
  • Malwood Under-dash Hydraulic Clutch Pedal


Features found ONLY on the MustangSteve POWER BRAKE CONVERSION:

  1. Revised Pedal Ratio-- Less pedal travel required & modern car "feel", (~2" travel with ft. disc, ~1" with 4 wheel discs
  2. Additional Firewall Bracing-- Welds to pedal support, eliminates firewall fatigue cracking around the booster mount area.
  3. 9" Diameter Booster-- Fox Mustang booster won't fade out under repeated stops like other conversions using off-brand or imported booster. Plus, you can always get replacement parts in the future.
  4. Factory Fit and Appearance-- Fits better than the original 65-66 booster and works better, too.
  5. Dual piston master cylinders fit with no clearance problems! -- Original 65-66 boosters won't clear, but this kit will!
  6. The new power brake light switch avoids making contact with the steering column tube. You don't have to worry any more about having to put a dent in your steering column in order to get the brake light switch to work properly.
  7. An all wheel disc master Cylinder
  8. An adjustable proportioning valve



Will it fit my 4 wheel disc brakes The kit fits ANY TYPE or combination of drum or disc brakes, the instructions specify what master cylinder to use. Also fits any original 65-73 master cylinder.

What about Falcon and Ranchero?  Yes, with a bit of extra work it can be made to fit other applications, although not quite as easily as the 65-66. Extra work means an extra piece must be welded to the brake pedal in order to properly relocate the pedal pin. 60-63 Falcon must use original style master cylinder due to shock towers, or use Shelby style export brace with tandem master. 67-70 Mustang/ Cougar -- use the 67-70 Mustang/Cougar booster and pedal now offered by MustangSteve.

Will the tandem master cylinder clear the shock tower?  What about clearing an export brace? Yes, it clears the tower by about 2 inches, and is not even close to the export brace. (except on early Falcons and Comets, where the single piston master fits easily, but the dual piston requires use of Shelby style export brace.)

Will it fit a 351W with Heddman headers? Yes, it clears with no problems whatsoever. You may have to remove the header to get the booster in place, but clears fine once bolted in.      

View full details