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The RockJock double‑adjustable Johnny Joint front upper control arms for TJ, LJ, XJ, MJ and ZJ vehicles provide length adjustability to tune caster and pinion angle with the arms installed. Fabricated from DOM tubing, they feature a Johnny Joint at the frame end, a fork at the housing end, semi‑gloss black powder coat and zerk‑fitted grade‑8 mounting bolts. The double‑adjustable design accommodates different lift amounts without replacing the arms.
RockJock TJ/LJ/XJ/MJ Johnny Joint Front Upper Double Adjustable Control Arms
