GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit
Universal Fit, Rear Position, Dual: 5 on 4.5" | 4.75" Bolt Pattern, 11.25 Inch Rotor Diameter
Build Your KitYou're almost there! This kit has an option or two for you to select. Let us know which options you want for your new kit.
If you dont want to spend an arm and a leg on a rear disc brake kit and still have to weld the bracket on, weve 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.
910-31919 Instructions (PDF)
Item DetailsWith non-emergency brake calipers.
This kit will fit 10 & 12 Bolt rear ends from:
The housing flange must have:
- 3-1/8" center-to-center distance for the top two bolt holes
- 2-11/16" center-to-center distance for the bottom two bolt holes
- 2-7/16" distance from the center of the top bolt to the center of the bottom bolt
Note: This disc brake kit does NOT fit all 10 & 12 bolt rear axles. It does NOT fit full size car (Biscayne, Bel Air, Impala) or pickup rear axles.
What's In The Kit
Speedway GM Brake Caliper Slider Slide BoltPart # 8352300542Qty x 4
IMCA Approved 1978-88 GM Metric LH Brake Caliper, 7/16-20 InletPart # 91031045-LQty x 1
IMCA Approved 1978-88 GM Metric RH Brake Caliper, 7/16-20 InletPart # 91031045-RQty x 1
Speedway 156 1978-Up D154 GM Metric Brake PadsPart # 9191562Qty x 2
Caliper Brackets - GM 10 & 12 Bolt Bolt OnPart # 91031983Qty x 1
Caliper Bolt Kit - 910-31983Part # 91031983-2Qty x 1
Speedway Replacement 11-1/4 Inch Rear Brake RotorPart # 91031039Qty x 2
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Q & A
After getting the control arms and drop spindles installed last time, we are dying to see what it looks like on the ground. Today we are working with the Speedway Deluxe Disc Brake Kit. Josh and Joe are on a roll!
Tim talks about the options we have for early Ford drum brakes.