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GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit w/ E-Brake
GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit w/ E-Brake

GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit w/ E-Brake

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GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit w/ E-Brake
GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit w/ E-Brake
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Part # 91031924
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  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

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Bolt Pattern:
Dual: 5 on 4.5"/4.75"
Rotor Diameter:
11.25 Inch
Rotor Type:
Caliper Pistons:
Caliper Finish:
Parking Brake Provision:
MFG. Part #:
Rotor Thickness:
Rotor Shape:
Hardware Included:
Sold in Quantity:
Includes rotors, calipers, pads, hardware, and caliper brackets.


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 emergency brake 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
  • Includes emergency brake calipers
  • Does not fit all 10 & 12 bolt axles - check Applications for details
  • Requires 15" and larger wheels as 14" and smaller wheels will not clear application.  

910-31924 Instructions (PDF)

Caliper Adjustment Instructions (PDF)

For more details and installation photos, see this article in Super Chevy magazine.


This kit will fit 10 & 12 Bolt rear ends from:

  • Chevelles
  • Camaros
  • Novas

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
  • Axle Flange Identification Chart (GIF)

This kit requires 15" and larger wheels.

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.   Kit does not clear 14" and smaller wheels.

Some parts are not legal for use in California or other states with similar laws/regulations

Related Products

What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • 1978-Up GM Metric Emergency Brake Caliper, LH, 5.45 Mount Bolts
    Qty x 1
  • 1978-Up GM Metric Emergency Brake Caliper, RH, 5.45 Mount Bolts
    Qty x 1
  • Speedway Replacement 11-1/4 Inch Rear Brake Rotor
    Qty x 2
  • Caliper Brackets - GM 10 & 12 Bolt Bolt On
    Qty x 1
  • Caliper Bolt Kit - 910-31983
    Qty x 1

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