Rear Disc Conv. Kit GM 10/12 Bolt No E-Brake

The Right Stuff Detailing Rear Disc Conversion Kit for GM 10-Bolt and 12-Bolt differentials (Part No. AFXRDM1) is a complete brake system upgrade designed to replace aging drum brake configurations with modern hydraulic disc technology. This retrofit kit delivers superior stopping power and thermal management for vehicles requiring reliable braking performance in demanding duty cycles.

The kit features an 11-inch plain rotor paired with a single-piston caliper architecture, matched to an offset hat design for proper wheel clearance. Iron construction with natural finish provides corrosion resistance and thermal stability under sustained braking loads. The absence of an integral e-brake mechanism allows this kit to serve applications where supplemental braking is handled externally or where simplicity of installation takes priority. The assembly weighs 60.8 pounds and fits within standard mounting envelopes for both 10-bolt and 12-bolt GM rear axle housings.

This conversion kit suits restoration projects, off-road vehicles, and specialty applications where OEM drum brakes no longer meet performance requirements. Users restoring classic GM trucks and performance vehicles frequently specify disc brake conversions to improve pedal feel, reduce fade under heavy use, and simplify maintenance. The kit is compatible with GM 10-bolt and 12-bolt rear differentials, making it a direct fit for many Chevrolet, GMC, and Pontiac model years from the 1960s through early 2000s.

Rear disc conversion is a proven upgrade path in the restoration and performance community. The 11-inch rotor diameter balances thermal capacity with packaging constraints typical of rear axle housings, while the single-piston design reduces complexity compared to dual-piston systems. Proper integration with front brake proportioning and load-sensing valves is essential for balanced stopping force distribution across the vehicle.