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Street Race Truck More... The Toolbox
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$356.99
$349.99
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

GM 8.2 Inch 10-Bolt BOP, GM 8.2 Inch 10-Bolt Chevy 64-72, GM 8.5 Inch 10-Bolt, Rear Position

8 Reviews | 27 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
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
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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
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Part # 91031919
$349.99
$356.99
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Details

Position:
Rear
Bolt Pattern:
Dual: 5 on 4.5" | 4.75"
Rotor Diameter:
11.25 Inch
Rotor Type:
Vented
Caliper Pistons:
One
Caliper Finish:
Natural
Color:
Natural
Parking Brake Provision:
No
MFG. Part #:
91031919
Rotor Thickness:
1.00"
Rotor Shape:
Round
Rotor I.D.:
2.78"
Rotor Backspace:
2.30"
Finish:
Natural
Hardware Included:
Yes
Sold in Quantity:
Kit
Notes:
Includes rotors, calipers, pads, hardware, and caliper brackets.
Rotor Material Type:
Cast Iron
Front Rotor Included:
No
Rear Rotor Included:
Yes
Front Caliper Included:
No
Rear Caliper Included:
Yes
Front Spindles Included:
No
Master Cylinder Included:
No
Brake Booster Included:
No

Info

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)

Item Details

With non-emergency brake calipers.

Application

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.

Notes

Installation note:

The inside diameter of this rotor will accept an axle flange that has a diameter of 6-1/4" or smaller.  If your axle flange exceeds 6-1/4" in diameter, you will need machine your axle flange to decrease your axle flange diameter to fit this rotor as necessary.

When utilizing an aftermarket axle with disc brake conversion kits, it may be necessary to reduce the diameter of the axle flange to a diameter necessary to adequately fit inside the required Clearance I.D. that the brake hat/brake rotor will require.  (see above diagram for illustration)

Charts

91031919 Instructions (PDF)

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
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.
  • Speedway GM Brake Caliper Slider Slide Bolt
    Qty x 4
  • IMCA Approved 1978-88 GM Metric LH Brake Caliper, 7/16-20 Inlet
    Qty x 1
  • IMCA Approved 1978-88 GM Metric RH Brake Caliper, 7/16-20 Inlet
    Qty x 1
  • Speedway 156 1978-Up D154 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
  • Replacement 11-1/4 Inch Rear Brake Rotor
    Qty x 2

Reviews

Q & A

Videos & Articles
  • In this tech article, we discuss the pros and cons of the Ford 9-Inch and the Chevy 12 Bolt rear ends. Click here for our take on this classic debate.
  • When it comes to a traditional style build on an early hot rod it just has to be rolling on a solid front axle of some sort. In this buyer's guide we take you through I-beam and round tube solid axles, spindle choices, radius rod needs, and more.
  • In this Tech Tip, a customer asked about finding a set of disc brakes for his 1949 Ford F1 pickup, with one caveat. He wants to use the factory wheels.

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