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The Superlift rear component box for 1973–1991 GM K‑series pickup 4WD is supplied as a 12-inch lift rear block kit and contains the rear-specific components needed to reach that taller lift range. Packaged as a rear component assembly, it’s intended to be combined with other kit items to complete a full suspension lift for compatible K‑series 4WD trucks.
Superlift 73-91 GM K Series Pickup 4WD 12in Lift Kit Component Box - Rear Block Kit
