|
#91031919
$380.99
/kit
In Stock
Quantity
Need Help? Call to Order
Add to a list
Select a vehicle to verify Fitment
Select Vehicle
GM 8.2 Inch 10-Bolt BOP, Rear Position, Natural
Comes as a Kit
View Kit Components
| MFG. Part # | 91031919 |
| Position | Rear |
| Wheel Bolt Pattern (in.) | 5x4.5 in. | 5x4.75 in. |
| Wheel Bolt Pattern (mm) | 5x114.3 mm | 5x120.65 mm |
| Rotor Diameter | 11.25 Inch |
Need help?
855.313.9176Quick and Easy Returns
Return PolicyWe tend to look back at the muscle car era of the 60’s and 70’s through rose-colored glasses. Everybody remembers lumpy solid lifter camshafts, big compression ratios, and blinding straight-line acceleration. But in the six decades or so that have passed since those big block-powered dinosaurs ruled the roads, we’ve gotten used to some modern performance and safety features that become conspicuous in their absence when we jump in the old Chevelle or Camaro for a trip across town. Those drum brakes that were just fine in 1969 can lead to some panic inducing near misses in modern traffic. To add some performance and peace of mind, don’t drop the bucks on a rebuild of those archaic rear drum brakes. Instead, consider a bolt-on rear disc brake conversion that won’t cost much more than a drum brake refresh, but will add some serious performance and safety to your GM midsize or ponycar.
Back in the day, only factory hot rods like the Z/28 were fitted with rear discs. The rest of the herd was saddled with heavy, fading rear drums. This Speedway Motors GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit makes it easy to bolt up the brake setup that was a trick high performance option when your GM midsize muscle car rolled off the line. This kit comes with everything needed to bolt GM Metric calipers on your 10 or 12-bolt GM rearend housing with no welding required. The caliper brackets in this kit simply bolt-on to the housing flange, making the install an afternoon job, not a full-on fabrication project. You can choose calipers with or without an emergency brake and the calipers come complete with brake pads and slide bolts. This kit also comes with a pair of vented 11-1/4” rotors. There may be bigger and more expensive rear disc brake kits out there, but this one delivers impressive performance at an affordable price while still looking more trick than those rusty old drums when viewed through big-inch Pro Touring-style wheels.
Application
Note that GM made many variants of the venerable 10 and 12-bolt rear. The brackets in this kit are configured to fit housings that do NOT have staggered shocks. There’s a full list of applications below, but typically, you’re going to find these in midsize cars like Chevelle and Cutlass from ’64 into the 70’s as well as first-gen Camaros and many years of Chevy II/Nova.
This kit is designed to fit 10 & 12 Bolt rear ends from:
This kit is NOT designed to fit the following:
To verify that this kit will work on your axle, you can double check that the flange where the caliper bracket will bolt up has the following dimensions:
Also check that the axle flange where the lug studs are pressed on has an outside diameter that is no larger than 6-1/4” and a brake register (the raised part at the center) that is no larger than 2.78".
Charts
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031919 |
| Brand | Speedway Motors |
| Position | Rear |
| Wheel Bolt Pattern (in.) | 5x4.5 in. | 5x4.75 in. |
| Wheel Bolt Pattern (mm) | 5x114.3 mm | 5x120.65 mm |
| Rotor Diameter | 11.25 Inch |
| Rotor Type | Vented |
| Caliper Pistons | One |
| Caliper Finish | Natural |
| Parking Brake Provision | No |
| Minimum Recommended Wheel Diameter | 15 Inch |
| Rotor Shape | Round |
| Hardware Included | Yes |
| Rotor Style | Plain Face |
| Front Rotor Included | No |
| Front Rotor Diameter | 11.25 Inch |
| Front Caliper Included | No |
| Rear Caliper Included | Yes |
| Front Spindles Included | No |
| Master Cylinder Included | No |
| Brake Booster Included | No |
| Brake Hoses Included | No |
| Rear Rotor Included | Yes |
| Finish | Natural |
| Color | Natural |
| Front Caliper Finish | Natural |
| Bolt Pattern | 5 on 4.5" | 4.75" |
| GENERAL | |
| Sold in Quantity | Kit |
| Notes | Includes rotors, calipers, pads, hardware, and caliper brackets. |
| Rotor Thickness | 1" |
| Rotor I.D. | 2.78" |
| Rotor Backspace | 2.3" |
| Rotor Material Type | Cast Iron |
4.8
21 Reviews
Customers highlight our product's significant improvement in braking, particularly on older model vehicles like the '67 Chevelle. They commend its quality, easy installation, and smooth fit, achieved through well-crafted bolt-on caliper brackets. Several users stress its practicality, revealing it's perfect for switching from drum to disc brakes. Most users found the product to be an upgrade in terms of usability and overall functionality, despite the lack of a spacer. Some customers suggest that clearer instructions could enhance the installation process even further. Overall, patrons affirm they would purchase the product again, signaling satisfaction and confidence in our superior brake kit.
4.8
21 reviews
5
18
4
1
3
2
2
0
1
0
Most Liked Positive Review
5.0
I've already bought a few more parts
The retro kit was very easy to install. I did not pull the axles or nothing like that. All I did is take my saws all and cut the dust shields for the drum breaks off super easy and the brakes look really good a lot better than drums. thank you for the update and all of my parts were very very built right thank you.
Most Liked Negative Review
3.0
Good enough to stop the car...
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.
Filter by Ratings
The product is great quality.
5.0
20 days ago
86Cutty
Houston Texas
Verified
These brakes are great quality. I haven't installed them yet but I am pleased
Would Recommend
Yes I would buy it again
5.0
2 months ago
John Lester
Longs SC
Verified
Have not installed this yet but all the parts quality.
Would Recommend
I bought these to match my front brakes
5.0
3 months ago
Gtotiger
Douglass ks
Verified
Installation was good and they perform very well.
Would Recommend
I would buy again
5.0
4 months ago
Reaster
Cleveland ohio
Verified
Easy to install
Would Recommend
Good price
5.0
4 months ago
Dave
Coonvalley
Fast shipping
Highly recommend!!
5.0
a year ago
DogDish442
Huntingdon TN
Verified
Exact fit, easy bolt on, exactly as described with awesome quality!!
Would Recommend
Fast delivery, great price
5.0
a year ago
dougo
indiana
Verified
Great bang for the buck, well built product
Would Recommend
I've already bought a few more parts
5.0
a year ago
Eddie dortch
Texas
Verified
The retro kit was very easy to install. I did not pull the axles or nothing like that. All I did is take my saws all and cut the dust shields for the drum breaks off super easy and the brakes look really good a lot better than drums. thank you for the update and all of my parts were very very built right thank you.
Good price but missing parts
3.0
a year ago
Kev
North Liberty, IN
Verified
First rear disc conversion kit I ever bought that didn't include caliper hoses and banjo bolts.
Would Not Recommend
Fit perfect
5.0
a year ago
Doc
West Bend ,Wisconsin
Verified
Nice to make new after 55years
Would Recommend
Showing 10 of 21 reviews
29 Questions • 12 Answers
What's the minimum inside diameter for wheels that this kit will clear??
by Isaiah
• 2 years ago
1 answer
View Answer
Do you have a similar kit that can be used on a 76 Firebird with staggered shocks?
by Ultramagnus
• 4 years ago
1 answer
View Answer
Will these work with staggered shocks?
by Phil
• 7 years ago
1 answer
View Answer
do these kits work on ten bolt BOP 1970 rear
by slow
• 8 years ago
1 answer
View Answer
What about an emergency brake? I don't see any provision for an e-Brake?
by Mike
• 8 years ago
3 answers
View Answers
Can i upgrade to to double piston caliper and bigger roaters ?
by Baggedndodiedrado
• 9 years ago
1 answer
View Answer
This kit doesn't come with the brake lines. Which brake lines should I purchase to go with the rubber kit with the banjo fittings 910-31919?
by tictic
• 9 years ago
1 answer
View Answer
Can I buy just the caliper mounts in this kit separately?
by nlong
• 9 years ago
1 answer
View Answer
Will this kit fit T-Bucket with a 10 bolt 56 Chevy rear that has an axle flange bolt pattern of 3.396 between (side to side) both top and bottom bolts, and 2.656 between (up and down) both side bolts? If not, do you have a kit that will fit without welding? Also, is there an option for an E-brake?
by T-Bucket builder
• 9 years ago
1 answer
View Answer
Will this work with an 1967 olds cutlass supreme o type rear end?
by ADAM
• 10 years ago
1 answer
View Answer
10 of 29 questions shown
1964-1977 Buick Skylark
1967 Chevy Camaro
1964-1973 Chevy Chevelle
1964-1968 Chevy Chevy II
1973-1977 Chevy El Camino
1973-1977 Chevy Malibu
1970-1972 Chevy Monte Carlo
1969-1979 Chevy Nova
1964-1971 Oldsmobile 442
1964-1977 Oldsmobile Cutlass
1964-1973 Pontiac GTO
1964-1977 Pontiac LeMans
1964-1970 Pontiac Tempest
