SSBC-USA front disc brake conversion kit with rotors, featuring a direct fit drum to disc conversion for improved braking performance.
SSBC-USA front disc brake conversion kit with rotors, featuring direct fit front drum to disc brake upgrade for vehicles.
Front disc brake conversion kit by SSBC-USA with direct fit front drum to disc brake conversion and DS rotors.
SSBC-USA front disc brake conversion kit with DS rotors installed on a vehicle wheel for improved braking performance.
SSBC-USA front disc brake conversion kit with rotors, featuring a direct fit drum to disc conversion for improved braking performance.
SSBC-USA front disc brake conversion kit with rotors, featuring direct fit front drum to disc brake upgrade for vehicles.
Front disc brake conversion kit by SSBC-USA with direct fit front drum to disc brake conversion and DS rotors.
SSBC-USA front disc brake conversion kit with DS rotors installed on a vehicle wheel for improved braking performance.

1964½-1966 Ford Mustang 4-Lug Power Front Disc Brake Conversion Kit, Automatic | A120-5.

SKU- A120-5

$1,050.00
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Shipping calculated at checkout.

4-Lug Power Front Drum-to-Disc Brake Conversion Kit

Convert compatible 1964½-1966 six-cylinder Ford Mustang front drum brake systems with the SSBC-USA A120-5 power front disc brake conversion kit. This system retains the compatible stock 4-lug drum brake spindle configuration while adding single-piston cast-iron calipers, 10.25-inch vented rotors, a 7-inch booster, dual-reservoir master cylinder, and the major components needed for a properly matched automatic-transmission conversion.

Key Features

  • Single-piston cast-iron front calipers
  • 10.25-inch vented front rotors
  • Designed for compatible six-cylinder, 4-lug Mustang applications
  • Uses compatible stock 4-lug drum brake spindles
  • 7-inch power brake booster
  • Automatic-transmission application
  • SSBC-USA part number: A120-5

What’s Included

  • Single-piston cast-iron front calipers
  • 10.25-inch vented front rotors
  • Semi-metallic brake pads
  • 7-inch power brake booster
  • Dual-reservoir master cylinder
  • Adjustable proportioning valve
  • E-coated mounting brackets
  • DOT flex hoses
  • Required installation hardware

Vehicle Fitment

Ford Mustang: Select 1964½-1966 six-cylinder, 4-lug models with automatic transmission, compatible stock drum brake spindles, and sufficient wheel clearance.

✔ Fitment Confidence: This kit is designed for compatible six-cylinder, 4-lug automatic-transmission Mustang applications. Not 100% sure about your lug pattern, spindle type, transmission, pedal setup, wheel clearance, or current brake system? Call our tech team at (716) 775-6700 before you order. We’ll help confirm the correct application details so you can buy with confidence.

Important Compatibility Note

This kit is intended for compatible automatic-transmission vehicles. Confirm transmission type, pedal assembly, firewall mounting pattern, and available clearance before ordering.

Wheel and Installation Notes

This system fits many 15-inch wheels when clearance is confirmed. Professional installation is recommended. Confirm spindle compatibility, wheel clearance, brake-line routing, booster and master-cylinder setup, pedal configuration, and proportioning requirements before installation. The system must be properly bled and the pads and rotors correctly bedded after installation.

🚚 Shipping: This item is configured to order at our Elma, NY facility — production and configuration typically take 5–10 business days. Supply constraints can occasionally cause temporary delays beyond this window. Need an update on your order? Contact us at (716) 775-6700 or orders@ssbc-usa.com with your order number and we’ll get you an answer right away. Your exact shipping cost is calculated at checkout based on your address.