Ford 9" Big Bearing Rear Disc Brake Conversion Kit – Passenger Car Applications

Upgrade the braking performance and safety of your Ford 9" rear axle with this complete rear disc brake conversion kit designed specifically for early (old style) Big Ford bearing housings with passenger car axles and small center bore hubs (2.875").

This kit is ideal for muscle cars, hot rods, and restomods running Ford 9” rear ends with 1/2” stud big bearing axles, delivering modern stopping power with a clean, bolt-on installation.

Featuring zinc-coated drilled and slotted vented rotors, this system improves heat dissipation, reduces brake fade, and enhances corrosion resistance. The rotors are drilled for multiple bolt patterns—5x4.5", 5x4.75", and 5x5"—allowing flexible wheel fitment across a wide range of builds.

Heavy-duty black powder-coated caliper brackets ensure strength, durability, and precise alignment, while GM-style single piston calipers with integrated parking brake provide reliable stopping performance and functional emergency brake operation.

This kit includes stainless steel braided brake hoses and complete mounting hardware, making installation straightforward with no welding or fabrication required.

  IMPORTANT FITMENT (READ BEFORE BUYING)

✅ This kit fits:

• Ford 9” EARLY (OLD STYLE) BIG BEARING
• 1/2" backing plate bolts
• Passenger car axles with small center bore (~2.875")
• Axle flange offset: 2-3/8" to 2-1/2"

❌ This kit does NOT fit:

• Ford F100 / truck applications
• Ford Bronco
• Large center bore axles (~3.5")
• Small bearing housings
• 1974+ Torino (new style big bearing unless properly spaced)

   Features & Benefits

• Drilled & slotted zinc-coated rotors
  Improved cooling, reduced fade, and corrosion resistance
• Multi-fit bolt pattern rotors
  5x4.5", 5x4.75", and 5x5" wheel compatibility
• GM-style calipers with integrated parking brake
  Reliable braking with functional e-brake system
• Black powder-coated brackets & calipers
  Durable finish with clean, professional appearance
• Stainless steel braided brake lines included
  Improved pedal feel and long-term reliability
• Complete installation hardware kit
  Everything needed for bolt-on installation

   Technical Specifications

• Rotor center bore: 2.875" (car-style hub register)
• Fits axle flange up to: 6.25" OD
• Bearing size: 3.150" (big bearing)
• Stud size: 1/2"
• Wheel requirement: 15" minimum diameter
• Installation: Bolt-on (no welding required)

 Note: Larger center bore machining available upon request.

   Applications

• 1966–1970 Ford Fairlane (big block / HD)
• 1968–1973 Ford Torino (pre-1974, 11” brake cars)
• 1968–1973 Mercury Montego
• 1968–1971 Mercury Cyclone
• 1966–1973 Ford Ranchero
• Select 1957–1972 Ford Galaxie / Mercury Monterey (5x5 applications with small register)
• Select 1969–1970 Mustang (428CJ / HD – rare)

   INSTALLATION NOTE

This kit includes universal trim-to-fit parking brake cables.
Final routing and connection to the factory system may require minor modification depending on vehicle.