JKS Manufacturing Adjustable Rear Upper Control Arm Kit

2018–2026 Jeep Wrangler / Gladiator

JKS1637

Overview:

The JKS Manufacturing Adjustable Rear Upper Control Arm Kit is engineered to enhance the off-road capability and suspension reliability of your 2018–2026 Jeep Wrangler or Gladiator. Designed for enthusiasts seeking improved suspension geometry and alignment precision, this kit features fully adjustable control arms with premium factory-style rubber bushings. These bushings are maintenance-free and specifically designed to reduce noise, vibration, and harshness (NVH), delivering a quieter, smoother ride both on and off the trail. Whether you’re tackling rugged terrain or cruising on pavement, this kit ensures superior control and durability.

Ideal for Jeep owners who demand both performance and comfort, the JKS adjustable control arms allow fine-tuning of your suspension setup to optimize tire clearance and axle positioning without compromising ride quality.

Key Features:

Built to provide strength, adjustability, and NVH reduction, the JKS Adjustable Rear Upper Control Arm Kit includes:

• Premium factory-style rubber bushings pre-installed at both ends for quiet, smooth operation and maintenance-free use
• Fully adjustable design with forged adjustable flex ends and jam nuts for precise suspension geometry tuning
• Heavy-duty 1-1/4"-12 threaded rods and hex-shaped weld-in bungs for secure, easy adjustments
• CNC-bent from durable DOM tubing to ensure proper clearance around tires, frame, and axle mounts
• Powder-coated finish for long-lasting corrosion resistance and rugged durability
• Bushing durometer engineered specifically to dampen noise, vibration, and harshness (NVH) for a controlled ride
• Sold as a pair for complete rear suspension upgrade

Construction & Design:

The control arms are crafted from stout DOM (Drawn Over Mandrel) steel tubing, CNC-bent for precise fitment and clearance. Each arm features a forged adjustable flex end that enhances strength and durability under demanding off-road conditions. The heavy-duty threaded rods and jam nuts allow for quick and secure adjustments, enabling you to dial in your suspension geometry with confidence. The premium rubber bushings are factory-style and maintenance-free, designed to absorb vibrations and reduce noise without sacrificing suspension articulation. A robust powder-coated finish protects the arms from corrosion and wear, ensuring long-term reliability in harsh environments.

Installation & Fitment:

This kit is designed specifically for 2018 through 2026 Jeep Wrangler and Gladiator models, ensuring direct fitment with no modifications required. Installation typically involves removing the factory rear upper control arms and replacing them with the adjustable JKS arms. The included jam nuts and threaded ends make alignment adjustments straightforward, allowing you to fine-tune your suspension geometry for optimal tire clearance and axle positioning. This kit is ideal for off-road enthusiasts who want to maintain factory ride quality while upgrading suspension performance and durability.

What's Included:

• Pair of JKS Adjustable Rear Upper Control Arms with pre-installed premium rubber bushings
• Jam nuts for secure adjustment
• Installation hardware (where applicable)
• Detailed installation instructions

Ideal For:

This adjustable rear upper control arm kit is perfect for Jeep Wrangler and Gladiator owners who:

• Seek to improve rear suspension geometry and alignment for lifted or modified vehicles
• Want to reduce noise, vibration, and harshness without sacrificing off-road capability
• Require durable, maintenance-free components built to withstand rugged terrain
• Desire a quiet, controlled ride both on-road and off-road
• Need easy-to-adjust control arms for fine-tuning suspension setup

JKS Manufacturing builds Jeep and off-road suspension parts—lift systems, control arms, track bars, disconnects, and supporting hardware—engineered for articulation and durability. It’s a popular choice for Wrangler and Gladiator owners looking to improve clearance, ride quality, and capability for real trail use.