RockJock Johnny Joint Rear Lower Adjustable Control Arms

2007–2026 Jeep Wrangler JL/JK 2.0L Turbo, 3.6L V6, 3.8L V6, 3.0L EcoDiesel, 6.4L 392

Part #: CE-9807RLA

Overview

The RockJock Johnny Joint Rear Lower Adjustable Control Arms are engineered specifically for Jeep Wrangler JL and JK models spanning from 2007 to 2026. Designed to accommodate a wide range of suspension lifts, these control arms provide precise length adjustability to optimize pinion angle after lift installation. This adjustability ensures improved driveline geometry, reducing vibrations and enhancing overall vehicle performance on and off-road.

Ideal for Jeep enthusiasts who demand durability and flexibility, these control arms allow for future suspension upgrades without the need for replacement, making them a long-term solution for lifted Wrangler owners.

Key Features

These adjustable control arms combine robust construction with advanced joint technology to deliver superior articulation and strength:

• Length adjustable design for precise pinion angle correction after suspension lifts
• Compatible with multiple lift heights, allowing upgrades without replacing control arms
• Fabricated from 1.625 inch outside diameter, 0.250 inch wall DOM steel tubing for exceptional strength
• Equipped with 2 1/2 inch Johnny Joint rod ends for maximum articulation and durability
• One end features a 2 1/2 inch Johnny Joint rod end; the other end includes a 1 1/4 inch right-hand thread forged Johnny Joint with jam nut
• Semi-gloss black powder coat finish for corrosion resistance and a sleek appearance
• Gold zinc plating on forged ends enhances corrosion protection and longevity
• Designed to improve suspension geometry and driveline angles for smoother, quieter operation

Construction & Design

RockJock’s Johnny Joint control arms are crafted from DOM (Drawn Over Mandrel) steel tubing, known for its superior strength and consistent wall thickness. The 1.625 inch diameter tubing with a 0.250 inch wall thickness ensures these arms can withstand the rigors of off-road use and heavy suspension articulation.

The use of forged Johnny Joints at both ends provides exceptional articulation capability, allowing the suspension to move freely without binding. The right-hand threaded forged joint with jam nut enables secure length adjustments that maintain alignment under demanding conditions. The semi-gloss black powder coat finish protects against rust and abrasion, while the gold zinc plating on the rod ends adds an extra layer of corrosion resistance.

Installation & Fitment

Installation of the RockJock Johnny Joint Rear Lower Adjustable Control Arms is straightforward for experienced mechanics and off-road enthusiasts familiar with suspension upgrades. These arms are designed to directly replace factory rear lower control arms on Jeep Wrangler JL and JK models from 2007 through 2026, including various engine options such as the 2.0L Turbo, 3.6L V6, 3.8L V6, 3.0L EcoDiesel, and the 6.4L 392.

The adjustable feature allows for fine-tuning of pinion angles after lift installation, eliminating the need for additional modifications or replacement parts when changing lift heights. No major modifications to the vehicle’s suspension are required, making these control arms a practical upgrade for lifted Jeep Wranglers.

What's Included

• One pair of RockJock Johnny Joint Rear Lower Adjustable Control Arms
• Adjustable jam nuts for secure length setting
• Installation hardware not included (vehicle-specific hardware reuse recommended)

Ideal For

These control arms are perfect for Jeep Wrangler owners who have installed or plan to install suspension lifts and want to maintain proper driveline angles and suspension geometry. Off-road enthusiasts seeking enhanced articulation and durability will benefit from the robust construction and adjustable design. Additionally, those who anticipate upgrading lift heights over time will appreciate the flexibility these arms provide without the need for replacement.

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.