1970 Ford Mustang & Mercury Cougar Kelsey-Hayes 4-Piston Front Disc Brake Kit, DS Rotors | A133-10-DS.

Kelsey-Hayes Power Front Drum-to-Disc Brake Conversion Kit with DS Rotors

Convert compatible 1970 Ford Mustang and Mercury Cougar front drum brake systems with the SSBC-USA A133-10-DS Kelsey-Hayes-style power front disc brake conversion kit. This system uses 4-piston cast-iron calipers and 11-inch dimple-drilled, slotted, and plated rotors for improved braking confidence and a more aggressive performance appearance.

Key Features

• 4-piston Kelsey-Hayes-style front calipers
• Black E-coat caliper finish
• 11-inch dimple-drilled, slotted, and plated front rotors
• Designed for compatible power front drum-to-disc conversions
• Fits select 1970 Ford Mustang and Mercury Cougar applications using compatible V8 drum brake spindles
• SSBC-USA part number: A133-10-DS

What’s Included

• 4-piston cast-iron front calipers
• 11-inch dimple-drilled, slotted, and plated front rotors
• Semi-metallic brake pads
• Power brake booster and master-cylinder components
• Adjustable proportioning valve
• DOT flex hoses
• Splash shields and backing plates
• Required installation hardware

Vehicle Fitment

Ford Mustang and Mercury Cougar: Select 1970 models with compatible V8 drum brake spindles and a properly matched power-brake configuration.

✔ Fitment Confidence: This kit is designed for the compatible 1970 Mustang and Cougar applications listed above. Not 100% sure about your spindle type, wheel clearance, pedal setup, existing brake configuration, or prior modifications? 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.

Wheel and Installation Notes

This system fits many 15-inch wheels and select factory-style 14 x 7-inch disc brake wheels when clearance is confirmed. Professional installation is recommended. Confirm spindle compatibility, wheel clearance, brake-line routing, booster and master-cylinder setup, 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.