Rancho Rear Upper Adjustable Control Arm Kit

2007–2023 Jeep Wrangler / 2018 Jeep Wrangler JK

RS66157B

Overview:

The Rancho Rear Upper Adjustable Control Arm Kit is engineered to enhance the ride quality and suspension performance of Jeep Wrangler models from 2007 through 2023, including the 2018 Wrangler JK. Designed for both stock and lifted Jeeps with up to 4 inches of lift, this kit offers precise adjustability to optimize pinion angles and suspension geometry. Ideal for off-road enthusiasts and daily drivers alike, it reduces noise, vibration, and harshness, delivering a smoother, more controlled driving experience.

Built to meet the demands of rugged terrain and everyday use, this control arm kit provides durability and long-lasting performance, making it a reliable upgrade for Jeep owners seeking improved handling and comfort.

Key Features:

Rancho’s Rear Upper Adjustable Control Arm Kit combines advanced materials and innovative design to deliver superior suspension performance. Key features include:

• Adjustable design allows fine-tuning of pinion angles for optimal driveline alignment
• Heavy-duty 1.25-inch outer diameter upper arms constructed from 0.188-inch DOM wall tubing
• Forged ends enhance strength and durability under demanding conditions
• Rancho’s proprietary D2 maintenance-free bushings with PTFE liners for self-lubrication and long service life
• Grease-free, high-articulation bushings reduce noise, vibration, and harshness (NVH)
• Durable black powder-coat finish resists rust and corrosion for extended component life
• Preassembled control arms included for straightforward installation
• Compatible with stock and lifted Jeep Wrangler JK and JL models with up to 4-inch lift
• Backed by Rancho’s limited lifetime warranty for peace of mind

Construction & Design:

The control arms are crafted from heavy-duty 0.188-inch DOM (Drawn Over Mandrel) wall tubing, providing exceptional strength and rigidity to withstand off-road stresses and daily driving demands. The 1.25-inch outer diameter tubing ensures a robust structure, while forged ends deliver enhanced durability at critical connection points.

Rancho’s D2 bushings feature a PTFE liner that acts as a built-in lubricant, eliminating the need for regular maintenance and ensuring smooth articulation. This design reduces friction and wear, contributing to quieter operation and improved ride comfort. The black powder-coat finish offers superior protection against corrosion, preserving the control arms’ appearance and structural integrity over time.

Installation & Fitment:

This kit includes two preassembled rear upper adjustable control arms, simplifying the installation process. Designed as a direct fit for Jeep Wrangler models from 2007 to 2023, including the 2018 Wrangler JK, it accommodates both stock suspensions and lifts up to 4 inches without requiring additional modifications. Installation typically involves standard hand tools and can be completed by experienced DIYers or professional technicians.

What's Included:

• Two preassembled rear upper adjustable control arms
• All necessary hardware for installation
• Installation instructions

Ideal For:

This control arm kit is perfect for Jeep Wrangler owners who want to improve suspension geometry and ride quality, whether running a stock setup or a moderate lift. It is especially beneficial for off-road enthusiasts seeking enhanced articulation and driveline alignment, as well as daily drivers looking to reduce noise and vibration for a more comfortable ride.

Fitment Summary

• Jeep Wrangler 70th Anniversary (2011)
• Jeep Wrangler 75th Anniversary (2016)
• Jeep Wrangler 80th Anniversary (2021)
• Jeep Wrangler Freedom (2021, 2023)
• Jeep Wrangler Islander (2021)
• Jeep Wrangler Rubicon (2007–2023)
• Jeep Wrangler Sahara (2007–2017)
• Jeep Wrangler Sport (2010–2023)
• Jeep Wrangler Sport S (2016, 2018–2023)
• Jeep Wrangler Unlimited 70th Anniversary (2011)
• Jeep Wrangler Unlimited 75th Anniversary (2016)
• Jeep Wrangler Unlimited 80th Anniversary (2021)
• Jeep Wrangler Unlimited Freedom (2021, 2023)
• Jeep Wrangler Unlimited High Altitude (2021–2023)
• Jeep Wrangler Unlimited High Altitude 4xe (2021–2023)
• Jeep Wrangler Unlimited High Tide (2022–2023)
• Jeep Wrangler Unlimited Islander (2021)
• Jeep Wrangler Unlimited Moab (2018–2019)
• Jeep Wrangler Unlimited Rubicon (2007–2023)
• Jeep Wrangler Unlimited Rubicon 392 (2021–2023)
• Jeep Wrangler Unlimited Rubicon 4xe (2021–2023)
• Jeep Wrangler Unlimited Sahara (2007–2023)
• Jeep Wrangler Unlimited Sahara 4xe (2021–2023)
• Jeep Wrangler Unlimited Sahara Altitude (2021–2023)
• Jeep Wrangler Unlimited Sport (2010–2023)
• Jeep Wrangler Unlimited Sport Altitude (2021–2023)
• Jeep Wrangler Unlimited Sport S (2016, 2018–2023)
• Jeep Wrangler Unlimited Willys (2021–2023)
• Jeep Wrangler Unlimited Willys 4xe (2023)
• Jeep Wrangler Unlimited Willys Sport (2021–2023)
• Jeep Wrangler Unlimited X (2007–2010)
• Jeep Wrangler Willys (2021–2023)
• Jeep Wrangler Willys Sport (2021–2023)
• Jeep Wrangler X (2007–2010)
• Jeep Wrangler JK Rubicon (2018)
• Jeep

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.