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Brand New Wilwood Forged Dynalite Pro Series Bolt-On Rear Hat & 12.19" Disc Brake Kit, (Part #140-9228-D), for Both Rear Wheels.


See the parts list, diagrams, & the assembly booklets below for a detailed break down of the parts included.


Features SRP Drilled & Slotted Rotors, as well as Powder-Coated Black Calipers.



  • 2005-2014 Ford Mustang Base
  • 2005-2014 Ford Mustang GT
  • 2007-2014 Ford Mustang Shelby GT500
  • 2008 Ford Mustang Bullit
  • 2012-2013 Ford Mustang Boss 302
  • 2014 Ford Mustang Shelby



  • SRP Drilled & Slotted, .810" Thick x 12.19" O.D. Rotors & Hats
  • Dynalite 4 Piston Performance Calipers - Powder Coated Black
  • Caliper Mounting Brackets
  • High Performance Street BP-10 Smart Compound Brake Pads
  • All bolts, washers, & shims necessary to install the complete braking system on both rear wheels


We highly recommend flushing out your old brake fluid, & replacing it with Wilwood's latest DOT 5.1 HI-TEMP 570 Racing Brake Fluid.


The Forged Billet Dynalite Internal is the next generation enhancement of the venerable Forged Dynalite series calipers. Designed with a single split bridge and spacer less design to enhance strength and appearance. These latest applied developments and innovations in caliper design and manufacturing processes have resulted in substantial improvements in strength and performance over all comparable models. This new spacer-less design of the Forged Dynalite series of calipers, makes this the stiffest and most visual pleasing design so far.


Strongest caliper in the class, & only weighs 3.6lbs! The process of stress-flow forging re-aligns the metal's grain structure within the contour of the caliper body. This process eliminates the breaks and interruptions to the internal grain structure that occur when machining a straight block billet. The FEA generated radial transition design eliminates steps and shoulders in the area between the piston housing body and the caliper bridges. Incorporating a radius in this transition area substantially increases resistance to deflection and caliper separation under load. Structural deflection and volume displacement tests have proven the Forged Dynalite to outperform all existing styles of this popular caliper size.


SRP Drilled Performance Rotors feature a specially engineered directional cross drill and face slot pattern that improve brake response and pad performance throughout the entire range of light to heavy braking. The venting and cleaning action of the holes and slots will reduce pad glaze and disperse gasses and heat generated during the pad to rotor interface. The holes and slots also inhibit irregular pad compound build-up on the rotor faces resulting in smoother engagement and improved pedal response in all conditions. The material removed also contributes to lower rotating and unsprung suspension weight. Along with the excellent performance characteristics of this rotor design, each rotor is treated with a black electro coat to inhibit corrosion on all areas of the rotor. The high tech design, classic style, and aesthetic appeal of the SRP series are the perfect finishing touches to any wheel and tire detail.


You can view and download the complete assembly instruction booklet for this Brake Kit HERE.


We have this series of kits also available in Red, & as well in Standard Rotors.


We have the Drilled Front Brake Kit, & also Front & Rear with the Brake Hoses & Racing Fluid.


Complete kit weighs approximately 50 lbs.

Wilwood Disc Brake Kit 140-9228-D,Rear,05-14 Mustang,12" Rotors,Black,Drilled

SKU: 140-9228-D
$1,218.68 Regular Price
$1,084.63Sale Price
Caliper Color: Black
  • SHIPPING TIME: There is no faster shipping on the web. We will ship as soon as the payment is processed. All UPS orders that are placed by 5:30 Central, Monday-Friday, are shipped out same day. Any order placed after 5:30 Central, or on the weekend, will be shipped out the next business day. See how many business days you are from us, via U.P.S. If you have any questions feel free to email or call us at (479)779-1243 at any time day or night. We want you to have the parts as bad as we do!

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