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GM A, F, X Body Front Super Twin 2 piston Disc Brake/Drop Spindle Conversion Kit - A123-1ADS


Upgrade your GM A, F and X Body front brakes to aluminum calipers. Our billet aluminum calipers give you the stopping power of a 4 piston caliper without wheel clearance issues. Maximum braking power with the flexibility of using most 15 inch wheels and weight saving high performance aluminum calipers

  • Kit includes 2 piston SuperTwin HD billet Aluminum calipers with stainless steel pistons and square cut seals and dust boots (DOT Design) dual bleeders for easy bleeding.
  • Aluminum calipers 6 lbs lighter than cast iron calipers for better ride quality
  • Calipers and Adjustable Valve 100% MADE IN THE USA
  • Includes Turbo slotted rotors with Xtra Life plating or optional Big Bite cross drilled rotors
  • Set of forged 2 inch drop spindles
  • 9" booster and power brake master cylinder power the light weight calipers.
  • Adjustable proportioning valve allow best performance for your rear brakes
  • Complete with master cylinder,low dust pads, caliper mounting brackets, master cylinder lines, seals, bearings, grease caps, DOT braided stainless flex hoses, spindle nuts and hardware.
  • No longer forced to use small G-Body brakes typically found in other drop spindle kits.
  • Will not fit most Pontiac factory wheels.

Please note that the calipers in this kit are coated with a clear anodize finish. Upgrade to red or black calipers for an additional cost.

Click here to download

Pricing: $1,389.23

Customize Your Item

- Rotor Upgrades -
- Powder Coat Upgrade -

Product Details

Caliper Name: SuperTwin
  • Number Of Pistons: 2
  • Piston Size: 43 mm
  • Constructed From: Billet Aluminum
  • Caliper Standard Finish: Clear Anodize
  • Caliper Optional Finishes: Powder Coat Red or Black
Rotor Details:
  • Diameter: 11 inch
  • Thickness: 1.000 inch
  • Venting: Uni-Directional
  • Rotor Standard Finish: Slotted & Plated, Optional Cross drilled
  • Bolt Pattern: 5x4.75 inch

Replacement Parts


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