While the coil suspension used in Jeep Wranglers, Cherokees, and Grand Cherokees offers far more articulation than the leaf springs used on earlier Jeeps, there is still plenty of room for improvement. The factory control arms are relatively short and use rubber bushings at each end of the stamped sheet-metal arms. These components are adequate when they are new and under a stock Jeep, but time, mileage, and larger tires are never kind to the factory control arms. Add a lift kit that throws the factory geometry out of whack and the stock arms become woefully inadequate as far as the caster and pinion angles are concerned.
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