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The RockJock front bump stop kit for TJ Wrangler, LJ Unlimited and compatible XJ, MJ and ZJ vehicles extends bump stop impact points to accommodate a 4‑inch lift. The kit includes polyurethane bump stop pucks, billet aluminum spacers and hardware that fit inside the coil spring top and bottom, and helps retain the coil spring to the differential housing. This set is intended for front‑end use only.
RockJock TJ/LJ/XJ/MJ Front Bump Stop Kit
