Affordable Bolt-On Rear Disc Brake Kit: Upgrade your GM 10 and 12 bolt rear ends with this cost-effective bolt-on rear disc brake kit. Enjoy the convenience of a ready-to-install system without breaking the bank., Designed for Mid-Size Cars: Specifically engineered to fit GM 10 and 12 bolt rear ends in mid-size cars, this kit ensures compatibility and reliable performance. Please note that it is not suitable for full-size cars, pickups, or 7.5" 10 bolt axles., Complete Kit for Easy Installation: This comprehensive kit includes everything you need for a hassle-free installation. It comes with two bolt-on caliper brackets, two vented rotors, two GM metric calipers, and all the necessary hardware for a seamless upgrade., Versatile Rotor Bolt Patterns: The rotors feature both 5 on 4-1/2" and 5 GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit Sku # 91031919 Mfr. Part # 91031919 Condition New Brand Speedway Motors Sold Kit Details 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.
Item Details
With non-emergency brake calipers.
Application This Part Fits
This kit will fit 10 & 12 Bolt rear ends from:
- 1964-77 Buick Skylark
- 1964-73 Chevy Chevelle
- 1964-79 Chevy Nova/Chevy II
- 1964-77 Chevy El Camino
- 1967-69 Camaro
- 1970-77 Chevy Monte Carlo
- 1964-71 Oldsmobile 442
- 1964-77 Oldsmobile Cutlass
- 1964-73 Pontiac GTO
- 1964-77 Pontiac LeMans
- 1964-70 Pontiac Tempest
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.
Charts
(PDF)
(GIF)
Installation Tips
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)
Specs Sold in Quantity Kit Finish Natural Rotor Diameter 11.25 Inch Caliper Finish Natural Rotor Shape Round Color Natural Notes Includes rotors, calipers, pads, hardware, and caliper brackets. Hardware Included Yes Parking Brake Provision No Rotor Thickness 1.00 Rotor I.D. 2.78 Rotor Backspace 2.30 Position Rear Rear Rotor Included Yes Front Spindles Included No Master Cylinder Included No Brake Booster Included No Front Caliper Included No Front Rotor Included No Rear Caliper Included Yes Rotor Type Vented Rotor Material Type Cast Iron MFG. Part # 91031919 Bolt Pattern 5 on 4.5" | 4.75" Caliper Pistons One Reviews Hoping to get better braking on my 67 Chevelle Rated by Rabbit on February 19, 2022
Summary: Used too eliminate the rear drum brakes on my 67 Chevelle
Yes, I recommend this product.
Noticeable improved braking over the drums Rated by Jim W. on November 10, 2020
Summary: The bolt on caliper brackets fit nicely and made the installation go smoothly. Other than a little plumbing the brake lines, which was not difficult, the installation was truly a bolt on.
Yes, I recommend this product.
In the process of installation. Rated by Me on January 23, 2019
Summary: Shipping - GREAT! Quality looks - GREAT!
Yes, I recommend this product.
Great Kit Rated by Boomer on July 20, 2018
Summary: Fit as advertised was easy to install and looks great on the car.
I would buy this product again Rated by Dave on May 30, 2018
Summary: Worked perfectly on my roadster, switching from drum to disc brakes.
Yes, I recommend this product.
Related Items / Suggested Parts GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit w/ E-Brake Dot Braided Stainless Brake Hoses, GM/Ford, 7/16-20 Rear Wilwood 290-0632 570 Brake Fluid, 12 oz Bottle Redline 80402 CV-2 Synthetic Grease Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
