12" Rear SS4+ Brake System

12" Rear SS4+ Brake System

This system features the S4 4-piston caliper mounted to a 12" 2 piece slot, drill, zinc plated rotor. Baer systems include calipers that have D.O.T compliant dust and weather seals, along with NAS high grade stainless hardware for our pre-assembled 2-piece rotor.  The SS4+ is designed just like Baer's larger systems, but in a smaller package for 15" wheels.


| Rotor Size/Type:
12" 2-piece

| Piston Count:
4 piston
| Pad Type:
Common 4 piston pad shared on the aftermarket (#DR1 or Hawks #HB100)
| Minimum Wheel Size:
15" (Use template to verify fitment, link below)
| Includes:
Caliper assemblies, brackets, hardware and rotor assemblies
| Notes:
Designed specifically for the CSX-4000 suspension.  Comes standard with Shelby logo, but can be orderd with Baer logo instead if selected below
Remaster sizing (which one do I order?)
Bore Size Manual Brake Power Brake Hydroboost
1 1/8"    
| Additional Notes:
  • 15/16" can be used Power or Manual.  Customers that prefer softer pedal feel with less pedal effort use 15/16" for Power Brakes
  • 1" with Power is based on good engine vacuum numbers, and that the booster is working corretly
  • Drag race applications with dual rear calipers should use a 1 1/8" Bore Remaster
  • Port Configuration is based off Drivers seat position.  LP - Left port (Fender side), RP- Right Port (Motor Side)
  • Most all applications will use LP exit.  Fox Mustangs (1979-1993) will use RP due to shock tower clearance

When purchasing a Remaster, ALL drop down menus must be selected to before adding the Remaster to your cart.

Many more custom colors available.  Check out our custom caliper color page click here.
Please contact us direct for additional information.
Unsure of what body code your vehicle is?

Our price: $1095.00


| Why Purchase the SS4+?

  • All the benifits of our larger brake systems just in a smaller package to fit 15" wheels
  • Perfect system for someone looking to retain 15" wheels, or the enthusiast that wants to have a larger wheel with the option to go back to the stock look
  • Everything needed per corner (including hoses and fittings) except for General fit applications.
  • Calipers have dust and weather seals
  • Proper banjo fittings (NOTE: Baer does not use any pipe thread fittings)
  • 6061 T-6 billet aluminum hat (anodized black) and bolted to the rotor
  • High grade U281 fine thread stainless hardware (with captured nuts). Rotor comes pre-assembled.
  • Includes a set of 6061-T6 billet machined hubs with quality bearings and races installed. Hubs are pre-assembled with bearings, races, studs and packed with Redline synthetic grease.
  • May be used with your current rear drum system.

| The S4 Caliper Features:

  • (4) 10mm cross bolts for maximum stiffness
  • Stainless steel abutments and noise suppression springs
  • Hard anodized aluminum pistons
  • Internal crossover design
  • Dual seals (dust/weather and pressure) to meet D.O.T specifications
  • Machined logo that is hand painted
  • Uses a common 4 piston pad for easy replacements
  • Red, Black or Silver Powder Coat Finish (custom colors available)
  • Available in Front or Rear for that same cosmetic matching look
  • Rear systems incorporate a drum in hat park brake
  • Rear systems for c-clip style axles include Baer’s Verislide self centering brackets
  • Uses correct banjo style fittings, Baer does not use any pipe thread
  • 100% MADE IN USA with US sourced material


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