Category: Cars, Outdoors, Technology

The Jeep Cherokee XJ, produced from 1984 to 2001, remains an icon of off-road capability and utilitarian simplicity. However, one of its most persistent weak points is the rear drum brake system. While adequate for factory specifications, drum brakes fade quickly during heavy off-road descents, mud intrusion reduces stopping power, and maintenance—from spring kits to wheel cylinder replacements—is notoriously finicky. Upgrading to rear disc brakes transforms the XJ’s braking performance, providing consistent pedal feel, shorter stopping distances, and easier serviceability. Fortunately, this is a well-documented swap using parts from a variety of Jeep and Mopar donors, most commonly from a ZJ Grand Cherokee (1993–1998) with a rear disc option, or a Ford Explorer 8.8 axle, which is another popular XJ swap.