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New! MM Technical Services: MM’s Engineering Team will provide setup recommendations specifically tailored for your Mustang. Get help choosing options for a Maximum Grip Box, deciding on coil-over spring rates, selecting a brake master cylinder, and advice on converting your Fox to Hydroboost.

New! Swapping a Coyote into a Fox Mustang? MM's Hydroboost Conversion Kits allow easy installation of a 1996-2004 Mustang Hydroboost power brake assist unit into a 1979-1993 Mustang.

New! Swapping an IRS into your Fox Mustang? MM makes it easier with a brake line kit made just for this conversion. Bolts-in, with no cutting or flaring of brake lines. Designed to fit standard IRS brake hoses.

New! MM now offers a tool for the giant nut securing a Mustang Hydroboost. This MM socket fits the 1-7/8" nut holding the Hydroboost to the firewall mount. Required when changing a Hydroboost unit.

New! MM's billet aluminum Pedal Box Spacer for Fox Mustangs. Replace the breakage-prone OEM plastic spacer when converting to manual brakes or Hydroboost.

Canadians! Please read the latest about ordering from Canada/shipping to Canada.

We've posted the parts list and link to the video of MM's Mustang in /DRIVE Tuner car Shootout

Manual Brake Installation Kit, 1987-93 master cylinder in 1987-93 Mustang
Actual product may differ from photo.


  • Item # MMBAK-5.1
  • Manufacturer: Maximum Motorsports


Larger Image
Hard-lines and fittings used with manual brake conversion, when retaining the stock 1987-93 Mustang 5.0L master cylinder. Connects the relocated master cylinder to stock 1987-93 Mustang 5.0L brake system.

This kit fits
  • Manual brake conversion
  • 1987-93 Mustang 5.0L master cylinder (21mm bore)
  • 1987-93 Mustang

  • Does not fit with a vacuum power booster
  • Connects a master cylinder relocated by a manual brake conversion to the stock proportioning valve location.
  • Will connect to the MM Proportioning Valve Eliminator Kit (MMBAK-6)
  • Direct fit installation; no cutting or flaring of brake lines
Product Features
  • Pre-bent hard-lines
  • Correct tube nuts; no separate adapters needed