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SSBC-USA Super Twin Disc Brake Kits
Super Twin - Front drum to disc brake conversion, includes new 2" drop spindles, , '64 - '72 GM "A-F"body - red powder coat
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Estimated Ship Date: Nov 18, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
A123-1ADSR
Part Type:
Product Line:
Summit Racing Part Number:
TSB-A123-1ADSR
Item Number:
6447405
UPC:
00810048991648
Location:
Front
Disc Brake Kit Type:
Power assist
Front Rotor Included:
Yes
Front Rotor Style:
Slotted surface
Front Rotor Construction:
Vented
Front Rotor Diameter:
11.00 in./279.40mm
Front Rotor Thickness (in.):
1.00 in.
Brake Rotor Bolt Pattern (in.):
5 x 4.75 in.
Brake Rotor Bolt Pattern (mm):
5 x 120.65mm
Rear Rotor Included:
No
Front Caliper Included:
Yes
Front Caliper Piston Quantity:
Two
Front Caliper Material:
Aluminum
Front Caliper Color:
Red
Rear Caliper Included:
No
Brake Pads Included:
Yes
Parking Brake Provision:
No
Minimum Recommended Wheel Diameter (in.):
15 in.
Front Spindles Included:
Yes
Spindle Type:
2 in. drop
Master Cylinder Included:
Yes
Brake Booster Included:
Yes
Remanufactured:
No
Brake Hoses Included:
Yes
Quantity:
Sold as a kit.
Notes:
Includes 9 in. booster, master cylinder, pads, caliper mounting brackets, splash shields, adjustable proportioning valve, lines, seals, bearings, grease caps, braided stainless flex hoses, spindle nuts and hardware.
SSBC-USA Super Twin Disc Brake Kits
Upgrade to better stopping power with SSBC-USA Super Twin disc brake kits. They feature lightweight, billet aluminum Super Twin 2-piston calipers—direct bolt-on replacements for many OEM applications—for better braking performance with less pad deflection. The calipers are clear anodized for added durability, but are also offered with a red or black powdercoat or polished finish. These brake kits include stainless flex lines, high performance pads, hardware, and CNC-machined turbo slotted rotors. Don't simply replace—upgrade to SSBC-USA Super Twin disc brake kits, available for a variety of applications from the 1960s and '70s.
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