RockJock Johnny Joint Control Arms

2007–2018 Jeep Wrangler JK 3.6L/3.8L V6

Part #: CE-9807FLA

Overview

The RockJock Johnny Joint Adjustable Front Lower Control Arms are engineered specifically for Jeep Wrangler JK and JK Unlimited models from 2007 to 2018 equipped with 3.6L or 3.8L V6 engines. These control arms provide essential length adjustability, enabling precise pinion angle correction after installing a suspension lift. Designed for off-road enthusiasts and Jeep owners who demand durability and flexibility, these arms allow you to upgrade your suspension lift height without the need to replace control arms in the future, ensuring long-term value and performance.

Whether you are lifting your Jeep for enhanced ground clearance or improved off-road articulation, the Johnny Joint control arms offer superior adjustability and strength to maintain proper suspension geometry and driveline alignment.

Key Features

RockJock’s Johnny Joint control arms combine advanced design and rugged materials to deliver reliable performance and adjustability:

• Length adjustable design allows fine-tuning of pinion angle after suspension lift installation
• Compatible with multiple lift heights, eliminating the need for future control arm replacements
• Constructed from 1.625 inch outside diameter, 0.250 inch wall DOM steel tubing for superior strength
• Equipped with 2 1/2 inch Johnny Joint rod ends for maximum articulation and durability
• One end features a 1 1/4 inch right-hand thread forged Johnny Joint with jam nut for secure adjustment
• Semi-gloss black powder coat finish protects against corrosion and wear
• Forged rod ends finished with gold zinc plating for enhanced corrosion resistance
• Designed specifically for Jeep Wrangler JK 2007–2018 3.6L and 3.8L V6 engines

Construction & Design

The Johnny Joint control arms are fabricated from DOM (Drawn Over Mandrel) steel tubing, known for its superior strength and consistent wall thickness. The 1.625 inch outer diameter and 0.250 inch wall thickness provide a robust structure capable of withstanding the rigors of off-road driving and suspension articulation. The rod ends utilize forged steel components, ensuring maximum durability and resistance to bending or failure under load.

Each arm is finished with a semi-gloss black powder coat that offers excellent protection against rust and environmental damage, while the gold zinc plating on the forged rod ends further enhances corrosion resistance. This combination of materials and finishes ensures long-lasting performance even in harsh conditions.

Installation & Fitment

Installation of the RockJock Johnny Joint Adjustable Front Lower Control Arms is straightforward for experienced mechanics and off-road enthusiasts familiar with suspension upgrades. These control arms are designed as direct replacements for the factory front lower control arms on Jeep Wrangler JK models from 2007 through 2018 with 3.6L or 3.8L V6 engines.

The adjustable length feature allows for precise alignment of the pinion angle after suspension lifts are installed, which is critical for maintaining driveline reliability and reducing vibrations. No additional modifications are typically required, but proper torque specifications and alignment checks are recommended during installation.

What's Included

• Pair of adjustable front lower control arms
• 2 1/2 inch Johnny Joint rod ends on both ends
• Jam nuts for secure adjustment locking
• Installation hardware not included (check vehicle-specific requirements)

Ideal For

This product is ideal for Jeep Wrangler JK owners who have installed or plan to install suspension lifts and need adjustable control arms to maintain proper driveline geometry. Off-road enthusiasts seeking enhanced articulation and durability will benefit from the Johnny Joint design. It is also suitable for those looking for a long-term suspension upgrade solution that accommodates future lift changes without additional part replacements.

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.