JK/JL Adjustable Control Arms - Rear Upper

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JK/JL Adjustable Control Arms - Rear Upper

The RockJock® Johnny Joint® Rear Upper Control Arm Set for all Jeep® JL & JK Wrangler models provides you with extremely heavy duty, adjustable length control arms to replace your factory control arms. Adjustable arms are a must for aligning lifted vehicles to get your pinion angle specs. in check!
These arms feature RockJock’s 2 ½” Johnny Joints, the original and most durable high-articulation urethane suspension joint on the market. Johnny Joints feature a smooth steel ball that pivots inside a proprietary urethane shell to provide over 30 degrees (per joint) of quiet, shock dampening articulation - without the excessive deflection found in soft rubber-based “flex joints”. Johnny Joints deliver a smooth, comfortable on-road ride with the ultimate in off-road capability. They are so trusted, that they are used by multiple commercial suspension companies, for both street and off-road suspension systems. 
Arms are fully greasable and are finished in semi-gloss black powder coat.

Kit Fits:

  • Jeep Wrangler JL Unlimited (4-door) – All Models
  • Jeep Wrangler JL (2-door) – All Models
  • Jeep Wrangler JK Unlimited (4-door) – All Models
  • Jeep Wrangler JK (2-door) – All Models

Kit Includes:

  • Johnny Joint Rear Upper Control Arms (Pair)

Adjustment Range:

  • Closed - 17.075”
  • Extended - 18.690”


  • Factory hardware is retained to attach arms to the axle and the chassis.
  • Arms are fabricated from 1.25” x .188” wall DOM steel tubing.
  • Adjusters feature 1”-14 threads.
  • Johnny Joint ends are fully rebuildable – should the need arise.
Brand Rock Jock 4x4
Shipping Weight 7.0000kg
Shipping Width 0.560m
Shipping Height 0.080m
Shipping Length 0.140m
Shipping Cubic 0.006272000m3

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