SPC Performance Rear Adjustable Upper Control Arm

2007–2024 Jeep Wrangler / 2018 Jeep Wrangler JK

13421

Overview:

The SPC Performance Rear Adjustable Upper Control Arm is engineered to enhance the suspension system of your Jeep Wrangler, whether stock-height or lifted. Designed for models from 2007 through 2024, including the Wrangler JK from 2018, this direct-fit control arm improves articulation flexibility and adds strength to handle larger tires and aggressive gearing. It offers on-vehicle adjustability, allowing you to fine-tune your rear pinion angle quickly and easily without removing the arm, making it an essential upgrade for off-road enthusiasts seeking improved performance and durability.

Built to withstand the rigors of off-road driving, this control arm combines advanced joint technology with robust construction to deliver reliable, bind-free articulation and reduced noise, vibration, and harshness (NVH). Whether you are upgrading your suspension for better handling or preparing your Jeep for demanding terrain, the SPC Performance Rear Adjustable Upper Control Arm provides a solid foundation for enhanced rear suspension performance.

Key Features:

This rear adjustable upper control arm is packed with features that improve suspension performance and ease of use:

• Direct-fit design for seamless installation on Jeep Wrangler models from 2007 to 2024 and Wrangler JK 2018
• SPC’s patented xAxis sealed flex joint at the frame end ensures bind-free articulation during off-road use
• OE-style rubber bushing on the axle end reduces noise, vibration, and harshness for a smoother ride
• Dual-threaded adjuster with jam nuts allows quick and precise rear pinion angle adjustments without arm removal
• Constructed from durable D.O.M. steel tubing with a forged link for superior strength and reliability
• Corrosion-resistant coating protects against rust and environmental damage
• Self-lubricated, sealed xAxis joints require no maintenance, reducing hassle and downtime
• Compatible with both stock-height and lifted Jeep Wranglers, supporting larger tires and aggressive gearing setups

Construction & Design:

The SPC Performance Rear Adjustable Upper Control Arm is crafted from high-quality D.O.M. (Drawn Over Mandrel) steel tubing, known for its exceptional strength and durability. The forged link design further reinforces the arm, ensuring it can withstand the stresses imposed by off-road driving and larger tire setups. The arm features a corrosion-resistant coating that guards against rust and environmental wear, extending the life of the component.

At the frame end, the innovative xAxis sealed flex joint receiver provides a maintenance-free, self-lubricated pivot point that allows smooth, bind-free articulation. This advanced joint design enhances suspension movement without compromising strength or durability. On the axle end, an OE-style rubber bushing helps absorb vibrations and reduce noise, improving overall ride quality.

Installation & Fitment:

Installation is straightforward thanks to the direct-fit design tailored specifically for Jeep Wrangler models from 2007 to 2024 and the 2018 Wrangler JK. The dual-threaded adjuster and jam nuts enable quick rear pinion angle adjustments without the need to disconnect or remove the control arm, simplifying alignment and suspension tuning. This feature is particularly beneficial for off-road enthusiasts who frequently modify their suspension settings.

No major modifications are required for installation, making this control arm an ideal upgrade for both stock and lifted Wranglers. It is compatible with a wide range of Jeep Wrangler trims, including Rubicon, Sahara, Sport, and Unlimited variants, ensuring broad application across the model lineup.

What's Included:

• SPC Performance Rear Adjustable Upper Control Arm
• Dual-threaded adjuster with jam nuts
• Installation hardware (where applicable)
• Detailed installation instructions

Ideal For:

This rear adjustable upper control arm is perfect for Jeep Wrangler owners who demand enhanced suspension performance and durability. It is especially suited for:

• Off-road enthusiasts seeking improved articulation and suspension flexibility
• Owners upgrading to larger tires and aggressive gearing setups
• Drivers looking to reduce NVH for a quieter, more comfortable ride
• Those who want easy, on-vehicle adjustability for rear pinion angle tuning
• Wrangler owners who require a maintenance-free, durable suspension component

SPC Performance serves the performance and enthusiast market with a lineup of aftermarket parts that help drivers personalize and refine their builds. Whether you’re chasing sharper response, better durability, or a more purpose-built look, SPC Performance products are designed to fit into street, track, and weekend-wrenching goals. Consider SPC Performance when you want practical upgrades with a performance-first mindset.