Crane Axle GM 14-Bolt Rear Axle Disc Brake Conversion Bracket (Pair)
F021010
The Crane Axle GM 14-Bolt Weld-On Disc Brake Brackets provide a strong mounting foundation for converting a GM 14-Bolt full-float rear axle from drum brakes to a ¾-ton disc brake setup. Manufactured from 3/8" steel, these brackets are designed to weld directly onto compatible 3.5" axle tubes and properly position the calipers for use with common GM ¾-ton brake components.
This weld-on design gives fabricators the flexibility to establish caliper position during installation while eliminating the weight and complexity of the original drum brake assemblies. The brackets are well suited for custom axle builds, trail rigs, tow rigs, rock crawlers, and other heavy-duty vehicles using a GM 14-Bolt full-float rear axle.
Includes:
- (2) 3/8" Weld-On Caliper Brackets
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Crane Axle |
| Product Type | Weld-On Rear Disc Brake Caliper Brackets |
| Axle Application | GM 14-Bolt Full-Float Rear Axle |
| Brake Conversion | GM ¾-Ton Disc Brake Conversion |
| Axle Tube Diameter | 3.5" |
| Material | 3/8" Steel |
| Mounting Style | Weld-On |
| Rotor Compatibility | GM ¾-Ton Rotors |
| Axle Position | Rear |
| Quantity | Sold as a Pair |
Fitment
| Year | Make | Model | Axle Application |
|---|---|---|---|
| 1973–2000 | Chevrolet | C2500 | GM 14-Bolt Full-Float Rear Axle |
| 1973–2000 | Chevrolet | K2500 | GM 14-Bolt Full-Float Rear Axle |
| 1973–2000 | Chevrolet | C3500 | GM 14-Bolt Full-Float Rear Axle |
| 1973–2000 | Chevrolet | K3500 | GM 14-Bolt Full-Float Rear Axle |
| 1973–2000 | GMC | C2500 | GM 14-Bolt Full-Float Rear Axle |
| 1973–2000 | GMC | K2500 | GM 14-Bolt Full-Float Rear Axle |
| 1973–2000 | GMC | C3500 | GM 14-Bolt Full-Float Rear Axle |
| 1973–2000 | GMC | K3500 | GM 14-Bolt Full-Float Rear Axle |
Fitment Notes
- Designed for GM 14-Bolt full-float rear axles with 3.5" axle tubes.
- Intended for use with common GM ¾-ton disc brake conversion calipers and rotors.
- Does not fit GM 14-Bolt semi-float axle applications.
- Vehicle year, make, and model do not guarantee fitment because axle assemblies may have been replaced or swapped.
- Verify axle type, tube diameter, hub configuration, rotor offset, and caliper compatibility before welding.
FAQ
1. Why convert a GM 14-Bolt axle from drum brakes to disc brakes?
A disc brake conversion can reduce unsprung weight, improve access for service, and eliminate many of the springs, adjusters, and small components used in the factory drum brake assembly. Disc brakes also shed mud and water more effectively than enclosed drums.
2. Why are these brackets made from 3/8" steel?
The caliper bracket must resist the braking torque transferred between the caliper and axle housing. The 3/8" steel construction provides a rigid mounting surface for heavy-duty rear axle applications.
3. Why use a weld-on caliper bracket?
A weld-on bracket allows the fabricator to position the caliper for the specific rotor, hub, and axle configuration. Once alignment is confirmed, the bracket becomes a permanent part of the axle housing.
4. How should the caliper brackets be positioned before welding?
Install the hubs, rotors, calipers, and brake pads before final welding. Center each caliper over the rotor and confirm that the caliper body, bleeder, brake hose, wheels, and suspension components have adequate clearance.
5. Will this conversion retain the factory parking brake?
That depends on the calipers and supporting components selected for the conversion. These brackets alone do not provide a parking brake system, so a compatible mechanical or driveline parking brake solution may be required.
