Rancho Adjustable Control Arm Kit (REAR)

2007–2023 Jeep Wrangler / 2018 Jeep Wrangler JK

RS66158B

Overview:

The Rancho Adjustable Control Arm Kit (REAR) is engineered to enhance the suspension performance and ride quality of Jeep Wrangler models from 2007 through 2023, including the 2018 Wrangler JK. Designed for both stock and lifted Jeeps up to 4 inches, this kit offers a durable, adjustable solution to improve handling, reduce noise, vibration, and harshness, and accommodate larger tires for off-road and on-road versatility.

Ideal for Jeep enthusiasts seeking a reliable upgrade, the Rancho control arms provide precise suspension geometry adjustments, ensuring optimal pinion angle and alignment for improved drivability and tire wear. Whether you’re upgrading your daily driver or building a rugged off-road rig, this kit delivers long-lasting performance and enhanced comfort.

Key Features:

Rancho’s Adjustable Control Arm Kit incorporates advanced design and materials to meet the demands of Jeep Wrangler owners. Key features include:

• Maintenance-Free Bushings: Equipped with Rancho’s D2 high-articulation, grease-free, self-centering bushings featuring a PTFE liner that acts as a lubricating agent for long-lasting, maintenance-free operation.
• Heavy-Duty Construction: Lower arms are made from 2-inch outer diameter, 0.188-inch DOM wall tubing with forged ends, ensuring strength and durability under demanding conditions.
• Adjustable Design: Allows fine-tuning of the pinion angle to optimize driveline alignment and reduce vibrations.
• Factory-Inspired Geometry: Bent similarly to factory control arms to maintain proper suspension geometry and accommodate larger wheels and tires.
• Corrosion Resistance: Finished with a durable black powder coat that resists rust and corrosion for extended service life.
• Compatibility: Designed for stock and lifted Jeep Wrangler JK and JL models with up to 4-inch lifts.
• Improved Ride Quality: Reduces noise, vibration, and harshness for a smoother, more comfortable driving experience.
• Easy Installation: Includes two preassembled control arms for straightforward installation without the need for complex modifications.
• Limited Lifetime Warranty: Backed by Rancho’s confidence in quality and durability.

Construction & Design:

The Rancho Adjustable Control Arm Kit is crafted from heavy-duty 2-inch outer diameter DOM (Drawn Over Mandrel) steel tubing with a 0.188-inch wall thickness, providing exceptional strength and resistance to bending or fatigue. The forged ends enhance durability at critical mounting points, ensuring reliable performance even under harsh off-road conditions.

Rancho’s proprietary D2 bushings are a standout feature, engineered to be maintenance-free with a self-centering design and a PTFE liner that eliminates the need for greasing. This advanced bushing technology reduces NVH (noise, vibration, harshness) while maintaining articulation and suspension responsiveness.

The black powder-coat finish not only delivers a sleek appearance but also protects the control arms from corrosion caused by exposure to moisture, dirt, and road salts, extending the lifespan of the components.

Installation & Fitment:

The kit is designed for direct fitment on Jeep Wrangler models from 2007 to 2023, including the JK series from 2018. It supports both stock suspension setups and lifts up to 4 inches, making it versatile for a wide range of builds. Installation is simplified by the inclusion of two preassembled control arms, reducing assembly time and complexity.

No major modifications are required, and the adjustable feature allows for precise alignment of the pinion angle, which is critical for maintaining driveline integrity and preventing vibrations. This makes the Rancho kit suitable for both professional installers and experienced DIY enthusiasts.

What's Included:

• Two preassembled adjustable rear control arms
• Rancho D2 maintenance-free bushings installed
• Hardware and installation instructions (where applicable)

Ideal For:

This control arm kit is perfect for Jeep Wrangler owners who want to improve suspension performance, especially those running larger tires or lifted suspensions up to 4 inches. It suits off-road enthusiasts, daily drivers seeking enhanced comfort, and anyone looking to reduce suspension noise and vibration while maintaining factory-like handling characteristics.

Rancho is a performance suspension and shock brand for trucks, SUVs, and Jeeps, offering shocks/struts, steering stabilizers, leveling kits, and lift systems built for trail and daily use. Their products are aimed at improving control and stability on rough terrain while maintaining everyday drivability—ideal for rigs that tow, haul, and still see dirt on the weekends.