What is the Brembo Brake Package?

The 5.0 returned to the Ford Mustang in the 2011 model Year, except this time it would come in the form of an all aluminum 4 cam, 32 valve motor that puts out 412 Horsepower, which is almost twice as much as the original push rod 5.0 we have loved between 1987-1995. With all this new found power, it was only natural to tune the suspension and add major stopping power. Hence, option 55D, or better known as the "Brembo Brake Package".

However, much confusion has been made as to what the "Brembo Brake Package" really consist of.  The Brembo Brake Package was and is only offered on 6 speed manual transmission GTs. The official Ford Buyers guide list the option as nothing more than a brakes, wheels, tires.  When one looks at part numbers on FordParts.com, you might see that all the mustangs models have the same part numbers listed, however the differences can only be detected by price and description, not part number. For this reason one must speak to Ford Parts Counter Person to get the actual extension numbers. If that's not confusing enough, you also have a whole global community of people on the internet posting ideas, theories and nonsense about what the "package" really consist of.

Because of all this confusion, it became easier for people to believe that the "Brembo Brake Package" (aka Option 55D) was just the addition of the Brakes and 19" Wheels and Tires, however, in really it is much more than that. Lets take a closer look.

First,we need to look at what a normal 2011-12 GT shares with a Brembo Mustang:

Part Specifications that ALL 2011-12 Mustang GTs come standard with including the Brembo Mustang:
  • Rear: 11.8" Vented Rotors with 1-Piston Calipers
  • Sway Bars ( 34.6mm Front/ 24mm Rear)
  • Strut Bar Brace
  • Higher Durometer Rubber Bushings

Second, lets look at what a standard 2011-12 Mustang GT does not have, that a Brembo Mustang does;

The (55D) Brembo Brake Package includes the following:

  • Front: 14" Brembo® Vented Rotors with Brembo® 4-Piston Calipers
  • 19 x 9.0-inch dark-stainless premium painted aluminum wheels
  • 255/40R19 Pirelli PZero Summer-Only (Coupe) or P255/40ZR19 Goodyear F1 Supercar (Convertible)
  • Different Springs (131lbs Front / 167lbs Rear)
  • Different Struts/ Shocks (tuned for spring rates)
  • GT-500 Rear Lower Control Arms ( Higher Durometer Rubber)
  • Unique Electronic Stability Control® (ESC) Tuning
  • Unique Sport Steering Control Setting (EPAS)
  • Tire Mobility Kit Replaces Spare Tire

Ford downplayed many of these features of the package, and didn't make a detailed list of it, probably because they wanted people to focus on the upcoming 2012 BOSS 302.  Why? The answer is simple, if one takes a base Mustang GT in the 300A Rapid Spec (plain like the the 2012 Boss 302, without comfort and electronic packages ), and adds the Brembo Brake Package and the optional 3:73 gears, they damn near have the same car for as little as $29,500. The 2012 Boss 302 stars at a MSRP of $42,000 ( it you can get it that cheap) and only comes with just 30 more Horsepower, manually adjustable shocks, slightly higher spring rates, a larger rear sway bar, and staggered size tires.

A true performance enthusiast would have to question, "is it worth it ?".  Other then the fact that the Boss name has superstar celebrity appeal and racing history behind it, could an enthusiast justify the $12,000+ (or more) price difference?  Seems hard to justify, considering that if you wanted to out perform the Boss 302 you could easily add 100+ horsepower to your "stock" 5.0 engine with a bolt on supercharger and upgrade the suspension with very little and still have an extra $6,000 in your pocket.  For these reasons, Ford may have thought that this scenario could easily cut in the Boss 302 sales.

Ironically, for the 2013 Boss 302, Ford has decided to add comfort and electronic packages as options because some buyers have complained that the 2012 Boss 302 is too race like and plain.  I guess, sometimes people forget what Boss 302 performance is about.

Do the Brembo Mustangs have the same "spring rates" as Standard GTs or Boss 302s?

They do not! They have their very own spring rates and part numbers. See the comparisons below:

Front Sway Rear Sway Front Springs Rear Springs

Base GT
34.6 mm 24mm 123 lbs. 156 lbs.
34.6 mm 24mm 131 lbs. 167 lbs.
Boss 302
34.6 mm 25mm 148 lbs. 186 lbs.
Laguna Seca 34.6 mm 26mm 137 lbs. 191 lbs.

* measured in pound force inch (lbf-in)

Is the Brembo Brake Package Mustang a "Special Edition"?

 There really is some argument to this because none of the Mustang Forums consider this a special mustang, but if you look at the numbers the argument could easily be made that it in fact is. In March 2011, I contacted Ford Motor Company and asked for a "2011 Mustang Model Take Report" which showed the breakdown of Mustangs by Options and Models. I posted this info to several Mustang Forms to be shared with other Mustang enthusiasts. What I was able to calculate, was out of 26,422 Mustang GTs made in the 2011 Model Year, only a total of 4,601 Brembo Brake Mustang GTs were made.  Percentage wise, of the 21,296 GT Coupes made only 19.05% came with the Brembo Brake Package. Of the 5,126 GT Convertibles made only 10.61% came with the Brembo Brake Package. The Breakdown of the Brembo Mustangs was 4,057 Coupes and 544 Convertibles. If you compare these numbers to the 5,026 Shelby GT500s made in 2011 Model Year, it becomes very clear the Brembo Mustang is in fact a "special edition" with not to many of them out there. Not to mention the final fact, out of 68,650 Mustangs (all model) of the 2011 Model Year,  only 6.70% were Brembo Brake Package Mustangs.

Rapid Specs

All Brembo Mustangs came standard with the above described 55D option (aka Brembo Brake Package) and the following standard features listed in the table below:


  • 5.0L 4V Ti-VCT V8 Engine
  • 6-speed Manual Transmission
  • Easy Fuel Capless Fuel Fill
  • Electric Power Assist Steering (EPAS)
  • Engine Cover
  • MyKey   
  • Power Brakes – Vented 4-wheel disc
  • Rear Window Defroster   
  • Remote Keyless Entry
  • Fully defeatable traction control system (TCS)


  • AdvanceTrac® with Electronic Stability Control® (ESC)
  • Driver/Passenger Side Impact Airbags
  • Dual Front Airbags
  • LATCH (Lower Anchors & Tethers for Children) System
  • Personal Safety System® for Driver and front Passenger
  • SecuriLock® Passive Anti-Theft (PATS)
  • SOS Post Crash Alert System
  • Tire Pressure Monitoring System (TPMS)


  • Auto Headlamps
  • Dark Chrome Pony in Grille
  • Dual Bright Rolled Exhaust Tips
  • Fog Lamps
  • LED Sequential Tail Lamps
  • Mirrors – Body Color, Dual Power with Integrated Spotter Mirror
  • Rear Quarter Mounted AM/FM Antenna    
  • Rear Spoiler

Now to the Interior. Brembo Mustangs could only be ordered in 3 Rapid Spec Interior choices from Ford . They were as follows:


•    Air Conditioning – Manual
•    Audio – Premium AM/FM stereo w/Single CD & Clock
•    Audio Input Jack
•    Console – Full armrest with locking storage
•    Covered Cupholder – 2
•    Floor Mats – front, black
•    Footrest – Driver    
•    Instrument Cluster – Chrome accent four gauge cluster and register vents    
•    Interior Trunk Release    
•    Lamps – Center High Mounted Dome (Coupe Only)   
•    Lighted Bezel (Convertible Only)   
•    Map Pockets
•    Power Point (2)
•    Seats – Cloth Bucket, 2-way Manual Passenger, 4-way Manual Driver    
•    Steering Wheel – tilt w/speed control
•    Windows/Locks – Power 1-touch Up/Down Driver and
•    Passenger Windows


All the included standard features of the Standard GT (300A)

•    6-gauge cluster w/MyColorTM
•    Ambient Lighting – Map pockets and Sill Plate, Cupholders, Front & Rear Footwells
•    Auto-Dimming Mirror
•    Bright Aluminum Accent Dash Appliqués, Pedal Covers Scuff Plate, Shifter Knob
•    Bright Chrome Door Speaker Surrounds   
•    Door Trim Panel Inserts
•    Gloss Paint Center Stack and Console
•    Leather Steering Wheel w/Brushed Spokes
•    Satellite Radio (6 mos. Complimentary SIRIUS® Subscription, N/A in AK & HI)
•    Seats – Leather, 6-way Power Adjustable Driver, 2-way
•    Adjustable Head Restraint and Power Lumbar
•    Shaker 500
•    SYNC®


All the included standard features of the Premium GT (400A)


Charcoal Black interior environment with color accented seats, Unique door trim with bright pony badge dark aluminum I/P panel.


front-engine, rear-wheel-drive, 4-passenger, 2-door coupe


DOHC 32-valve 5.0-liter V-8, aluminum block and heads, port fuel injection

Power (SAE net) > 412 bhp @ 6500 rpm
Torque (SAE net) > 390 lb-ft @ 4250 rpm

6-speed manual


Wheelbase  107.1 in
Length  188.1 in
Width  73.9 in
Height  55.8 in
Curb weight  3600 lb

EPA city/highway driving
17–18/25–26 mpg

Ford Part Numbers

Front Suspension

Front Springs: 

Coupe:  SEF BR33-5310-EA  E29EJ
(Tan Label)

Front  Strut Assembly


R    BR3Z 18124 E
L     BR3Z 18124 E


R    BR3Z 18124 F
L     BR3Z 18124 F   

Brake Rotor

R   7R3Z 1125 A
L    7R3Z 1125 A

Brake Caliper

R  BR3Z 2B120 B
L   BR3Z 2B121 B

Brake Pads

7R3Z 2001 A

Shield Splash

R  7R3Z 2K004 A
L   7R3Z 2K004 A

Rear Suspension

Rear Springs:   SGR BR33-5560-GB E29EJ  (Green Label)

Rear Shock Absorber

BR3Z 18125 E (listed)
(BR33-18045-EE  1A14438A - Not verified yet)

Rear Lower Control Arm


©2011-2014  R.A. Marocco
Brembo®is a registered trademark of Brembo S.p.A.
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