Rear Disc Brake Conversi on Mopar 8-1/4 - 9-1/4

The Rear Disc Brake Conversion Mopar 8-1/4 - 9-1/4 by LEED BRAKES is a complete retrofit kit engineered for drivers upgrading their Mopar 8.25 and 9.25 rear differentials to modern disc braking technology. This conversion is essential for classic car enthusiasts, restoration shops, and performance builders who demand reliable stopping power without the fade characteristic of original drum brake systems. The kit transforms aging drum setups into contemporary hydraulic disc systems, delivering consistent pedal feel and substantially improved braking performance across both street and track applications.

Built around a robust single-piston caliper design and paired with 11.000-inch plain iron rotors, this conversion system prioritizes thermal stability and fade resistance during sustained braking. The iron rotors are zinc-plated for corrosion resistance, ensuring longevity in harsh road conditions and variable weather exposure. At 62 pounds and dimensionally compact at 14 x 10.5 x 21 inches, the kit integrates cleanly into Mopar rear axle housings without requiring extensive chassis modifications. The zinc-plated finish on critical components protects against rust and extends service life, a critical consideration for vehicles exposed to road salt or stored seasonally.

This conversion is ideal for owners of classic Mopars, muscle car restorations, and vintage hot rods where factory drum brakes no longer meet modern safety or performance standards. Installation requires basic mechanical competency and standard hand tools; compatibility is assured for both 8.25 and 9.25 Mopar differentials, making this a versatile upgrade path for multiple model years and engine configurations. Pairing this rear conversion with a matching front disc system delivers balanced brake bias and predictable stopping dynamics, essential for confidence-building highway driving and track-day performance.