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GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit
GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit

GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit

4 Reviews | 24 Answered Questions
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GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit
GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit
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We estimate this item will ship on or before March 23rd.
Part # 91031919
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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:
Rotor Thickness:
Rotor Shape:
Rotor I.D.:
Rotor Backspace:
Hardware Included:
Sold in Quantity:
Includes rotors, calipers, pads, hardware, and caliper brackets.
Rotor Material Type:
Cast Iron


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. 

Axle Flange Identification Chart (GIF)

910-31919 Instructions (PDF)

Item Details

With non-emergency brake calipers.


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 

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.

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

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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.
  • Speedway GM Brake Caliper Slider Slide Bolt
    Qty x 4
  • IMCA 1978-1988 GM Metric Caliper, LH Left Hand, 7/16-20 Inlet, Racing
    Qty x 1
  • IMCA 1978-1988 GM Metric Caliper, Right Hand, 7/16-20 Inlet, Racing
    Qty x 1
  • Speedway 156 1978-Up GM Metric Brake Pads
    Qty x 2
  • Caliper Brackets - GM 10 & 12 Bolt Bolt On
    Qty x 1
  • Caliper Bolt Kit - 910-31983
    Qty x 1
  • Speedway Replacement 11-1/4 Inch Rear Brake Rotor
    Qty x 2

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