RockJock Adjustable Johnny Joint Rear Upper Control Arms

2018–2026 Jeep Gladiator

RJ-150400-103

Overview:

The RockJock Adjustable Johnny Joint Rear Upper Control Arms are engineered specifically for Jeep Gladiator models from 2018 through 2026. Designed to enhance suspension performance and durability, these control arms provide precise length adjustability to optimize pinion angle after installing a suspension lift. This feature eliminates the need to remove either end of the arm during adjustments, simplifying the tuning process and saving valuable time.

Ideal for off-road enthusiasts and Jeep Gladiator owners looking to upgrade their suspension system, these control arms offer long-term versatility by accommodating various lift heights without requiring replacement. Whether you’re upgrading to a higher lift or fine-tuning your current setup, RockJock’s adjustable arms deliver reliable performance and improved articulation.

Key Features:

RockJock’s rear upper control arms combine rugged construction with advanced adjustability and premium components. Key features include:

• Adjustable length via right-hand and left-hand threaded adjuster ends for easy pinion angle correction
• Forged 2 1/2 inch Johnny Joint rod ends on both ends for maximum articulation and durability
• Heavy wall 1.625 inch outer diameter x 0.250 inch wall DOM steel tubing for superior strength
• 1 1/4 inch -14 RH/LH threads with jam nuts to securely lock adjustments in place
• Semi-gloss black powder coat finish for corrosion resistance and a sleek appearance
• Gold zinc plating on forged rod ends to prevent rust and extend service life
• Designed to fit a wide range of Jeep Gladiator trims including Rubicon, Mojave, Overland, Sport, Willys, and special editions
• Enables suspension lift upgrades without the need to replace control arms in the future

Construction & Design:

RockJock control arms are built from heavy-duty DOM (Drawn Over Mandrel) steel tubing measuring 1.625 inches in outer diameter with a 0.250 inch wall thickness, providing exceptional rigidity and resistance to bending or flexing under extreme off-road conditions. The use of forged Johnny Joint rod ends on both ends ensures smooth articulation and precise movement, critical for maintaining proper suspension geometry during articulation and articulation travel.

The adjustable design incorporates right-hand and left-hand threaded ends with jam nuts, allowing for fine-tuning of arm length without disassembly. This thoughtful engineering reduces installation time and enhances the versatility of your suspension setup. The semi-gloss black powder coat finish protects the arms from corrosion while maintaining a clean, aggressive look, complemented by gold zinc plating on the rod ends for added durability.

Installation & Fitment:

Installation of the RockJock Adjustable Johnny Joint Rear Upper Control Arms is straightforward for experienced mechanics and off-road enthusiasts familiar with suspension upgrades. The adjustable threaded ends allow pinion angle adjustments to be made without removing the control arms from the vehicle, streamlining the process after lift installation. These arms are designed to fit most Jeep Gladiator models from 2018 to 2026, including popular trims such as Rubicon, Mojave, Overland, Sport, Willys, and special editions like the 80th Anniversary and High Altitude.

No major modifications are required, making these control arms a direct and durable upgrade for lifted Gladiators seeking improved suspension geometry and articulation.

What's Included:

• Pair of RockJock Adjustable Johnny Joint Rear Upper Control Arms
• Forged Johnny Joint rod ends installed on both ends
• Jam nuts for secure adjustment locking
• Installation hardware (if applicable, verify with retailer)

Ideal For:

This control arm set is perfect for Jeep Gladiator owners who have installed or plan to install suspension lifts and want to maintain optimal driveline angles and suspension performance. Off-road enthusiasts seeking enhanced articulation and durability will appreciate the robust construction and adjustable design. It is also ideal for those who want a future-proof solution that accommodates different lift heights without the need for replacement parts.

RockJock 4x4 by John Currie develops trail-proven suspension and steering components for Jeeps and modern off-road platforms, including complete lift systems and the well-known AntiRock sway bar setups. Built around durable, articulation-friendly designs, RockJock is a go-to for enthusiasts who want confident road manners and real capability when the terrain gets technical.