Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
Speedway Motors Logo
America's Oldest Speed Shop ®


AFCO 7250-0110 GM 10 & 12 Bolt Axle Brake Kit

SAME DAY SHIPPING! Order within the next 11 hours 58 minutes and receive same day shipping

Material Type:
Cast Iron
Sold in Quantity:
Bolt Pattern:
Dual: 5 on 4.5"/4.75"
Thread Pitch:
Hardware Included:
Rotor Diameter:
Caliper Pistons:
MFG. Part #:
Rotor Thickness:
Caliper Finish:
Rotor I.D.:
Rotor Backspace:
Rotor Construction:
Garage Sale:
Rotor Location:
Rotor Shape:
Includes rotors, calipers, pads, hardware, and caliper brackets.
AFCO 7250-0110 GM 10 & 12 Bolt Axle Brake Kit

Click image to enlarge

Please NOTE the following about this product:

  • This item is sold as a kit.
  • This product is discontinued.



Q & A

What's in the Box

These rear disc brake kits allow you to simply bolt disc brakes on your GM 12 Bolt rearend. Includes two bolt-on caliper brackets, two vented rotors, two new GM Metric calipers and hardware. Has both 5 x 4-1/2" and 5 x 4-3/4" bolt pattern.

Kit includes:

  • 11-1/4" one-piece vented iron rotors
  • Caliper brackets
  • Metric calipers, 2-1/2" pistons
    • 10mm - 1.5 inlet
  • Brake pad spacers
  • AFCO C1 pads
    • Medium-High temp rating
    • Extremely rotor friendly, exceptional pad life
  • Slide bolts
  • All hardware included

Minor fitting to axle housing may be required. 

You may also be interested in:

Speed Bleeder Bleed Screws, 3/8-24
(Part #6173959)

The Speed Bleeder is a direct replacement for the bleeder assembly in your caliper. This makes brake bleeding truly a one-man operation. Simply "crack" the bleeder loose, pump the brakes, then close the bleeder. 

Sold in pairs.

Read more about bleeding brakes in our tech article, How To Bleed Your Brake Lines. 

Braided Stainless AN 12 Inch Brake Line
(Part #91031842)

Braided stainless covering over a Teflon inner liner. These are perfect for brake lines, clutch lines and gauge lines. These have straight AN3 or AN4 fittings on both ends. Sold each.

AN 3 O.D. is .265 and AN 4 O.D. is .305

Select applicable length. AN size is the "-#" at the end of each part number.

Speedway Purple Proportioning Valve
(Part #91031353)

Allows easy adjustment of front-to-rear brake bias. Universal design works on all race cars. Has a 100 to 1500 psi range with up to 57 percent pressure reduction.

Includes two 1/8"-27 NPT to 3/8"-24 inverted flare fittings.

Brake System Builder's Tip (Link) 

AFCO 6691903 Ultra HTX 600+ Brake Fluid, 16.9 oz.
(Part #1066691903)

If you are using a parts store brake fluid, you are not getting the most from your brake system. AFCO Ultra HTX racing brake fluid is specifically formulated for racing under the most demanding conditions. Ultra HTX's high wet and dry boiling points give you maximum protection against vapor lock and other problems associated with high brake system temperatures. With a 600+ degree boiling point, Ultra HTX high temp brake fluid sets a new standard for brake fluid performance.

  • Specifically formulated for racing
  • High wet and dry boiling points
  • 600+ degree dry boiling point
  • Exceeds D.O.T. 3, 4 and 5.1 requirements
  • Virtually elminates vapor lock
  • Non-silicone
GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit
(Part #91031919)

If you don't want to spend an arm and a leg on a rear disc brake kit and still have to weld the bracket on, we've got you covered. This complete kit includes two bolt-on caliper brackets, two 11-1/4" vented rotors, two GM metric style calipers, brake pads and hardware.

  • Rotors have both 5 on 4-1/2" and 5 on 4-3/4" bolt circles
  • Fits axle with a maximum flange diameter of 6-1/4" O.D.
  • 2.780" rotor center hole
  • Does not fit all 10 & 12 bolt axles. Check Application tab for details. 

Axle Flange Identification Chart (GIF)

910-31919 Instructions (PDF)