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1987-1993 Mustang 1993 Cobra Style Brake Booster Kit by 5.0 Resto


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Details   |   Videos   |   Reviews
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
1987-1993 Mustang 1993 Cobra Style Brake Booster Kit
5.0 Resto 1993 Cobra Style Brake Booster | Review (1979-93)
How To Remove & Install 5.0 Resto 1993 Cobra Style Brake Booster (1979-93)
How To Adjust 1993 Cobra Style Brake Booster Pushrod (1979-93)

Upgrade the braking system on your 1987-1993 Fox Body Mustang with this period correct 1993 Cobra style brake booster kit from industry leader 5.0 Resto!

Item #LRS-2005CB-K

Everyday Low Price: $299.99

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 Benefits

  • Perfect For Disc Brake Conversions
  • Larger Diaphragm Than Factory Booster
  • Improves Brake Pedal Feel & Modulation
  • Brand New Booster, NOT Remanufactured
  • Saves Time & Hassle Searching For Correct Parts

 Features

  • Pre-Bent Lines To Correct Length & Locations
  • Factory Dimensions & Tolerances
  • Adjustable Booster Push Rod
  • Master Cylinder Bore - 1"
  • Black E-Coat Finish

 What's in the Box

  • (1) 1993 Cobra Style Brake Booster
  • (2) Master Cylinder to Booster Retaining Nuts
  • (4) Brake Booster to Firewall Retaining Nuts
  • (1) Brake Light Switch Hardware Kit
  • (1) 1993 Cobra Master Cylinder
  • (1) Master Cylinder Brake Line Adapter

1987-1993 Mustang 5.0 Resto 1993 Cobra Style Brake Booster Kit
Complete the braking system upgrades on your 1987-1993 Fox Body Mustang with this 5.0 Resto 1993 Cobra-style brake booster kit. 5.0 Resto has assembled this kit to ease the steps of a disc brake conversion or upgrade to larger piston calipers on your Mustang. This kit ensures that your brake upgrades have the proper supporting parts to enable your Fox Body Mustang to stop on a dime with a proper pedal feel! 

5.0 Resto 1993 Cobra Style Brake Booster
Utilized in the 1993 Mustang Cobra, Cobra R, and the Ford Performance M-2300-K brake kit, the 1993 Cobra brake booster was the ultimate solution for disc brake conversions on Fox Body Mustangs. For years, Fox Body Mustang owners who upgraded braking components opted for the 1993 Cobra brake booster due to its larger diaphragm, providing increased pedal assist. The popularity of this brake booster can be attributed to its ability to maintain a factory pedal feel when running upgraded braking components, such as larger piston calipers or a rear disc brake conversion. To prevent the hunt for hard-to-find disc brake conversion components, 5.0 Resto is proud to offer this new 1993 Cobra-style booster for all Fox Body Mustang upgrade projects. Featuring a black e-coat finish, factory dimensions, and tolerances, this 5.0 Resto 1993 Cobra-style brake booster is identical to the original but utilizes brand-new components inside and out. All of the mounting studs utilize the factory thread pitch, which will allow for the original hardware to be reused. The actuator rod has the same inner diameter as the original unit, which enables the provided plastic bushing to install right into place and can be easily positioned onto the brake pedal arm inside the car. An adjustable pushrod on the engine bay side of the brake booster allows for the proper length to be set and the correct pedal effort to be achieved per the application. A pre-installed rubber grommet and vacuum check valve arrive on this brake booster to ensure the proper vacuum is achieved when the brakes are applied. This 1993 Cobra-style brake booster accepts popular master cylinder options such as the 1993 Cobra master cylinder included in this kit, making this a period-correct upgrade for your braking system. To ease final installation, 5.0 Resto includes the correct master cylinder and brake booster retaining nuts and the correct brake light switch hardware to allow for proper spacing of the booster brake light switch underneath the dash. 

Maximum Motorsports Master Cylinder Brake Line Adapter
To appropriately adapt the included 1993 Cobra master cylinder to the factory brake hard lines, 5.0 Resto includes the correct Maximum Motorsports brake line adapter. This adapter is needed as the factory hard lines use different size fittings and are in different locations. Rather than bending new lines and guessing the correct fitting sizes, 5.0 Resto eliminates the hard work with these bolt-on Maximum Motorsports adapter lines saving you time and money. All lines are pre-bent and come with the correct fittings to make the connection between the 1993 Cobra-style brake booster and master cylinder a breeze! 

1993 Cobra Master Cylinder
Completing this kit is a remanufactured 1993 Cobra master cylinder with the larger 1" bore and 1.41" pushrod depth. The additional fluid volume required from larger calipers and disc brake conversions is ultimately why 5.0 Resto opts for the 1993 Cobra master cylinder, as it will provide excellent braking power and pedal travel, ensuring your Fox Body Mustang will stop on a dime!


5.0 Resto Products Limited Warranty - Click Here

  • Ford Mustang - 1987, 1988, 1989, 1990, 1991, 1992, 1993
Fitment Notice
  • Fits 1987-1993 Mustang w/ upgraded braking components (larger piston calipers/rear disc brake conversion)
  • Due to the overall dimensions of Modular engines, the overall diameter of this booster can cause interference. 
  • Vacuum assist brake setups are not recommended for Modular engine swaps.
  • Because of the larger brake booster, the factory master cylinder hard lines must be repositioned accordingly.  
  • WARNING: The brake booster pushrod length MUST be adjusted before installation. 
  • Failure to properly set the booster pushrod length will result in the pushrod being too long (brakes will drag) or too short (pedal will be too low).
  • Please reference our pushrod adjustment video HERE.
  • No matter the application, the mounting holes in the firewall will need to be slotted, and the strut tower will need to be massaged to install this brake booster.
  • An adjustable proportioning valve and proportioning valve plug are required when running this kit.
  • Proper bench bleeding and bleeding of the entire brake system is required upon installation.

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

  • How To Replace 5.0 Resto '93 Cobra Style Brake Booster | 79-93 Mustang

    Follow along as LMR walks you through all the steps to complete the 1993 Cobra-style brake booster install on your 1979-1993 Fox Body Mustang! more

    Read more: 79 93 mustang , 5.0resto , cobra , brakes

    Posted on 10/20/2021

  • How To Set Adjustable Proportioning Valve

    Since the introduction of the Fox Mustang, owners have always wanted upgraded brake setups. When incorporating a rear disc conversion, fine-tuning is needed for the rear brake bias. This is where an adjustable proportioning valve comes into place. more

    Read more: 79 93 mustang , brakes , tech , tech guide

    Posted on 8/19/2022

  • Fox Body Master Cylinder Upgrade For Disc Brake Conversions

    When increasing the Fox Body’s stock horsepower numbers, the master cylinder will need to be upgraded for disc brake conversions. Follow LMR's guide to help! more

    Read more: 79 93 mustang , fox body , brakes

    Posted on 10/5/2020

  • How To Adjust 5.0 Resto '93 Cobra Style Brake Booster | 79-93 Mustang

    Follow along as LMR walks you through all of the steps to adjust 5.0 Resto's 1993 Cobra-style brake booster on your 1979-1993 Fox Body Mustang! more

    Read more: 79 93 mustang , cobra , brakes

    Posted on 10/27/2021

  • How To Install Fox Body Brake Light Switch | 1980-93 Mustang

    Over time your brake light switch can corrode or become faulty, causing your brake lights not to work. Check out our Fox Body brake light switch install guide! more

    Read more: fox body , brakes , how to , installation

    Posted on 8/13/2020


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    About This Brand


    5.0 Resto
    5.0 Resto - Dedicated To The Preservation Of The Fox Body Mustang
    5.0 Resto® is the one and only brand dedicated to the restoration and preservation of 1979-1993 Fox Body Mustangs. Specializing in designing and manufacturing problem-solving solutions, 5.0 Resto® provides superior restoration products for the Fox Body Mustang community to ease the restoration of the beloved platform. A brand built on automotive enthusiasts, 5.0 Resto® is driven to deliver convenience by offering premium products that save the customer time and money with a complete solution to eliminate all uncertainty. Through extensive research and development, rest assured that each and every 5.0 Resto® product is made from the highest quality materials for an industry-leading fit and finish.

    Be sure to shop for all 5.0 Resto® Fox Body Mustang Parts exclusively at LMR.com

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