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Wilwood 4-Piston Big Brake Kit, Race. (Fits 87-93 with SN95 Spindles)

There is no getting around it, the OEM brakes on the Fox are pretty horrible.  For years the "go to" option was to upgrade to the Cobra brakes which got you a better PBR caliper and larger rotor.  At the end of the day, those are still OEM components and have limitations. For a car that only sees street duty they will do the job but if you plan on hitting the track, making a proper upgrade in brakes should be high on your list.  

Any big brake kit is going to have a high initial hit to the wallet, but one thing that is never really talked about is "cost per lap".  You can continue to put in expensive track pads with OEM rotors but you will wear through both those components faster than you would if you had a motorsports quality caliper and rotor.  Better calipers and rotors will preserve the pads longer and wear more consistently, saving you money in the long run all while providing braking performance that you will never get from the OEM units. 

Wilwood developed this kit with racing in mind, designed around production category road racing that allow brake upgrades, but limit modifications to four-piston calipers and 12.88” rotors. FSL4R/ST Quick-Silver calipers use Thermlock pistons to resist fade and extend service life by reducing the heat transfer into the caliper from the pads. Available in your choice of HD Series directional vane (plain) rotors or GT Series directional vain (slotted) rotors provide high cooling efficiency and durability mounted to the hubs with forged aluminum GT hats. Kits also include high temperature race compound pads, stainless steel flexlines, and premium grade hardware for installation in 17” and larger wheels.


  • Fits 87-93 Mustangs WITH SN95 Front Spindles.  
  • Min 17" wheels are required for 12.88" Rotor - Wheel Template


  • Wilwood Forged Superlite 4R 4-Piston Nickle Plated Caliper
  • Thermlock Pistons
  • 12.88" 2-Piece Rotors, with Aluminum rotor hats
  • Choice of Plain or Slotted Rotors 
  • Designed to work with OE Master Cylinder  
  • Pads, brackets, brake lines and all hardware needed for installation included.

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