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

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Specs
Sold in Quantity:
Kit
Finish:
Natural
Rotor Diameter:
11.25
Bolt Pattern:
Dual: 5 on 4.5"/4.75"
Caliper Finish:
Natural
Rotor Construction:
Vented
Material Type:
Cast Iron
Caliper Pistons:
Single
Rotor Location:
Rear
Rotor Shape:
Round
Hardware Included:
Yes
Drilled:
No
Slotted:
No
Rotor Thickness:
1.00
Rotor I.D.:
2.78
Rotor Backspace:
2.30
Notes
Includes rotors, calipers, pads, hardware, and caliper brackets.
GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit

Click image to enlarge

Please note the following about this product:

  • This item is sold as a kit.

Details

Reviews (2)

Q & A (17)

What's in the Box

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)

910-31919 Instructions (PDF)

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.

Customer Reviews

Rated 3.5 out of 5 by 2 reviewers.
RATING BREAKDOWN
2 reviews
5 Stars
0
4 Stars
1
3 Stars
1
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

J-Rod
Verified Purchaser
Santa Cruz, California

Good enough to stop the car...

March 31, 2011
I used this brake kit on my 54 chevy pickup with a ten bolt chevy rear axle. It is obviously an upgrade from what they had stock in 54, but don't expect any serious performance. The kit does not come with a much needed spacer to substitute where the old drum mounted to the axle to keep the axle bearings and gaskets in their correct position. But overall, a great buy for the price.
Pros:
  • Lightweight
  • Easy To Install
Yes, I recommend this product.
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Was this review helpful? 0 0

james r
Verified Purchaser
ottawa il

I would buy this again

January 02, 2011
everything[...] fit great.
Pros:
  • Easy To Install
Yes, I recommend this product.
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Was this review helpful? 0 0

Page 1 of 1

Product Q&A

17 questions : 17 answers

1 answers

I need to replace one of my rotors. Can I get just the rotor or would I have to buy the kit again?

cmalbert10
October 23, 2014

I need to replace one of my rotors. Can I get just the rotor or would I have to buy the kit again?

Answers

October 24, 2014
EricM
The part number for the replacement rotor is 91031039.
1 answers

Will this kit fit a 8.5 rear end from 87 442 And what back spacing of wheels would I need if it changes

Mike21
Atlanta, GA, USA
July 07, 2014

Will this kit fit a 8.5 rear end from 87 442 And what back spacing of wheels would I need if it changes

Answers

July 08, 2014
EricM
Yes this will fit an 8.5" 10 bolt. You can use the stock backspacing wheels.
1 answers

i have a 1992 4x4 blazer rear axle will this disc brake kit work with this style axle?

stevesmith23
missouri
May 31, 2014

i have a 1992 4x4 blazer rear axle will this disc brake kit work with this style axle?

Answers

June 02, 2014
EricM
If you have a 10/12 bolt rear end with the 4 bolt flange at the backing plate you can check your measurements to make sure disc brake kit number 91031919 will fit. Between the two lower bolts horizontally is 2 11/16", the upper two horizontally 3 1/8" and vertically both front and rear is 2 7/16" then you have the correct flange and offset. If you have only 3 bolts holding the backing plate on then you have the 7.5 and requires a different kit.
1 answers

What about park brake options?

bogey
Atl
February 17, 2014

What about park brake options?

Answers

February 17, 2014
EricM
I do offer this same kit but with calipers that have an emergency brake provision. That kit is part number 91031924
1 answers

Will this kit fit my 71 Buick GS or is there a better kit?

basherbob
St. Charles, MO, USA
October 02, 2013

Will this kit fit my 71 Buick GS or is there a better kit?

Answers

October 03, 2013
Jason
The listing for the Gran Sport shows 73-77 and not inclusive of the 71. This would be on the 8.5 ring gear. On the 7.5 it shows later years also and not including the 71. On our website look up part number 91031919 and under the Info tab in purple print is axle identification Chart. Open this and look at the GM 12 bolt flange which is also the 10 bolt that the kit works with. The axle offset would need to be 2.81” for the kit to work. If your rear end meets these dimensions then it could work.
1 answers

will this fit a 2" narrowed 12 bolt in a 70 chevelle will this fit a 4" narrowed 12 bolt in a 70 chevelle??

lsxchevelle
Iowa
May 22, 2013

will this fit a 2" narrowed 12 bolt in a 70 chevelle will this fit a 4" narrowed 12 bolt in a 70 chevelle??

Answers

May 22, 2013
EricM
Kit number 91031919 will fit the standard 10/12 bolt Chevy rear ends as long as the ends of the housing, bolt pattern, and offset of 2.81” is the same as the original rear end. Narrowing the rear end does not present problems unless the ends are changed for other reasons.
1 answers

Will a 15" wheel with 6" back spacing clear the calipers? Wheel is a custom steel wheel 15x10 with 6" back spacing.

Triker45
O'Brien, Oregon
August 28, 2011

Will a 15" wheel with 6" back spacing clear the calipers? Wheel is a custom steel wheel 15x10 with 6" back spacing.

Answers

August 30, 2011
John
This brake kit works with most 15” disc brake compatible wheels. The 11 ¼” rotors along with the calipers require the I.D. of the wheel to be a minimum of 13 ¼-13 ½ in the area of the caliper. There are other notations of importance regarding the kit as listed: It does ((NOT)) fit the rear housings from full- size cars (Biscayne,BelAir,Impala) or trucks. It ((DOES)) fit the rear housings from Chevelles, CAmaros, Novas, and such with the following dimensions on the housing ends: Center-to-center on the top two bolts 3-1/8" Center-to-center on the bottom two bolts 2-11/16" Center of top bolt to center of bottom bolt 2-7/16"
1 answers

What replacement pads are used with this kit? Can the be found at parts stores or are they specially shaped?

Paul
Colorado
August 15, 2011

What replacement pads are used with this kit? Can the be found at parts stores or are they specially shaped?

Answers

August 17, 2011
Jason
These calipers are from a metric GM. Pad part number is 9191562 but this is a standard pad available at any parts store
1 answers

will this kit work with a rear end that has c clip elimators installed?

April 22, 2011

will this kit work with a rear end that has c clip elimators installed?

Answers

April 26, 2011
Craig
As long as the c-clip eliminator does not have any brackets or hardware that mounts to the back side of the axle flange then this kit should work with an axle with the c-clip eliminator.
1 answers

will this kit fit my 1991 camaro? and if so then what else do i need?

brenton
monroe, LA
January 31, 2011

will this kit fit my 1991 camaro? and if so then what else do i need?

Answers

February 03, 2011
Bill
This brake kit p/n 91031919 is for GM 10/12 rear ends using the 8.5" ring gear. This kit will not fit the 91 Camaro as it uses an 7.5" ring gear. You will want to use p/n 91031923. This fits GM 10 bolt with the 7.5" ring gear. This kit includes bolt-on caliper brackets, 11-5/8" vented rotors, GM Metric style calipers, brake pads and hardware 5 on 4-3/4" bolt circle. Fits over an axle with a maximum flange diameter of 6" O.D., 2.872" rotor center hole. Requires a minimum 14-5/8" I.D. of wheel for caliper clearance.
Page 1 of 2

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