The best 10-bolt disc brake conversion depends on your vehicle, axle, wheel pattern, and installation needs. For GM trucks, two listed kits specify a 5-on-5 bolt circle and cover 1964–1987 10- and 12-bolt axles. For midsize cars, the Speedway Motors kit includes brackets, vented rotors, GM metric calipers, and hardware; another option specifies 1959–1970 Impalas and 1963–1970 C10 pickups. Check the fitment limits before choosing: several kits exclude particular vehicle or axle configurations.
| Product | Best suited for | Key consideration |
|---|---|---|
| 1964–1987 GM Truck Kit | GM truck applications with a 5-on-5 pattern | Requires axle removal and hard-line shortening |
| Impala and C10 Brackets | Specified Impala and C10 rear housings | Requires 15-inch-or-larger wheels |
| GM 10/12-Bolt Bolt-On Kit | Eligible GM midsize cars | Does not fit several listed applications |
| Speedway Motors Dual-Pattern Kit | Eligible GM midsize cars needing listed components | Not for pickups or full-size cars |
| 1964–1987 GM Axle-End Kit | Specified GM truck axle ends | Confirm vehicle and bolt-pattern fitment |
1964–1987 GM Truck Rear Disc Kit
This kit is specified for 1964–1987 GM 10- and 12-bolt applications and uses a truck 5-on-5 bolt circle. It is a relevant choice for a buyer converting a compatible truck rear axle rather than a midsize-car setup. Its stated application range and truck bolt pattern are the main reasons to consider it.
Installation consideration: The product information says the axles must be pulled to install the kit and the original steel hard lines must be shortened. Choose it if those tasks suit your build plan; account for them before starting. Confirm the axle and wheel bolt pattern against your vehicle before purchase.
Impala And C10 Rear Caliper Brackets
These brackets are listed for stock rear housings on 1959–1970 Chevrolet Impalas and 1963–1970 C10 pickups. They work with GM metric 1980–1985 calipers and 11.25-inch rotors. The product description says they bolt to the stock rear housing without drilling or modification, making them a fitment-specific option for buyers who already plan to use the stated calipers and rotor size.
Clearance caution: The listing requires wheels that are 15 inches or larger for proper clearance. Check wheel size and confirm the housing and brake-component specifications before selecting these brackets.
GM 10/12-Bolt Midsize Car Kit
This bolt-on kit is intended for GM 10- and 12-bolt rear axles in midsize cars, and the listed installation does not require welding. Its rotors have both 5-on-4.5-inch and 5-on-4.75-inch patterns, offering two specified wheel-bolt patterns. It may suit a buyer seeking a bolt-on conversion for an eligible midsize-car axle.
Fitment caution: The product information excludes full-size cars, pickups, 7.5-inch 10-bolt axles, and applications with staggered shocks. Avoid choosing it until you have verified that none of these exclusions applies.
Speedway Motors Dual-Pattern Kit
This Speedway Motors kit is designed for GM 10- and 12-bolt rear ends in midsize cars. The listed contents include two bolt-on caliper brackets, two vented rotors, two GM metric calipers, and installation hardware. The included components make it a useful option for a buyer looking for a kit with those major brake parts specified in the package.
The product description says it is not suitable for full-size cars, pickups, or 7.5-inch 10-bolt axles. Choose this kit only after confirming the vehicle is a midsize-car application and the axle is not one of the listed exclusions.
1964–1987 GM Axle-End Disc Kit
This kit is listed for 1964–1987 GM 10- and 12-bolt rear axle ends. Its description specifies a truck 5-on-5 bolt circle and cross-drilled rotors. Those details make it a candidate for buyers seeking a truck-pattern conversion kit with that rotor style, provided the year and axle application match.
Fitment caution: The available product details do not identify further vehicle exclusions or installation requirements. Verify the specific rear axle, vehicle application, and 5-on-5 pattern before ordering rather than assuming the broad year range guarantees fitment.
Buying Guide: How To Choose A 10-Bolt Disc Brake Conversion
Does the kit fit your vehicle and axle?
Start with the vehicle year and type, then identify the rear axle. A kit for a midsize car may not fit a pickup or full-size car. Check whether the axle is a 10-bolt or 12-bolt, and note any stated exclusions such as a 7.5-inch 10-bolt axle or staggered shocks. Do not rely on the phrase “10-bolt” alone to establish compatibility.
Which wheel bolt pattern and size do you need?
Compare the kit’s stated bolt circle with your wheels. The truck kits above specify 5-on-5, while one midsize-car kit lists both 5-on-4.5-inch and 5-on-4.75-inch patterns. Also check wheel clearance: the Impala and C10 brackets specify wheels of at least 15 inches. A matching bolt pattern does not by itself confirm brake clearance.
Are you buying brackets or a more complete kit?
Read the included-parts list carefully. The Speedway Motors kit names brackets, vented rotors, calipers, and hardware. The Impala and C10 product is specifically identified as a bracket kit, so confirm which additional parts your conversion requires. Listings that do not state all contents should not be assumed to include unmentioned components.
What installation work should you plan for?
Installation needs differ by product. One truck kit requires axle removal and shortening the original steel hard lines. Another midsize-car kit is described as bolt-on without welding, while the Impala and C10 brackets are described as requiring no drilling or modification. Use the product-specific instructions and confirm the work involved before beginning.
Frequently Asked Questions
Will every GM 10-bolt disc conversion fit a pickup?
No. Some listed kits are intended for midsize cars and explicitly exclude pickups. Select a kit whose product information identifies your truck application and axle.
Do these kits all use the same wheel bolt pattern?
No. The two specified truck kits use a 5-on-5 pattern. One midsize-car kit lists 5-on-4.5-inch and 5-on-4.75-inch patterns. Confirm the pattern for the exact kit you are considering.
Do I need to remove the axles to install a conversion?
The 1964–1987 GM truck kit says axle removal is required. Installation requirements may differ for other kits, so check the specific product details.
Can I use wheels smaller than 15 inches with the Impala and C10 brackets?
The product information calls for wheels that are 15 inches or larger to ensure proper clearance. Do not assume smaller wheels will clear.
Are brackets alone the same as a complete brake kit?
No. A bracket listing does not establish that rotors, calipers, or hardware are included. Check the stated package contents for the specific product.