Rancho Short Arm Suspension System

2007–2018 Jeep Wrangler / Jeep Wrangler JK

RS66114B

Overview:

The Rancho RS66114B Short Arm Suspension System is engineered to enhance the off-road capability and on-road comfort of your Jeep Wrangler (2007–2017) and Jeep Wrangler JK (2018). Designed for enthusiasts who demand superior handling and durability, this kit delivers a balanced lift with progressive rate coil springs and fully adjustable control arms. Whether tackling rugged trails or cruising city streets, the RS66114B provides improved suspension articulation, axle centering, and a smoother ride.

Built with continuous improvements from Rancho’s extensive off-road experience, this suspension system offers a reliable upgrade that maintains vehicle stability and drivability while increasing ground clearance.

Key Features:

The Rancho RS66114B kit incorporates advanced suspension technology and robust components to ensure lasting performance:

• Progressive rate coil springs that provide a comfortable ride and enhanced load handling
• Fully adjustable short control arms with D2 bushings for precise alignment and improved axle positioning
• Heavy-duty adjustable front and rear track bars with D2 bushings to maintain axle centering under extreme conditions
• D2 bushings featuring PTFE liners for maintenance-free, grease-free operation and reduced wear
• Raises the front suspension by approximately 4.0 inches and the rear by 3.5 inches for increased ground clearance
• Compatible with select Rancho shock absorbers (front: RS999331, RS77331, RS55331; rear: RS999332, RS77330, RS55332)
• Includes all necessary hardware for a complete suspension upgrade
• Limited lifetime warranty from Rancho for peace of mind

Construction & Design:

Rancho’s RS66114B suspension system is crafted from high-strength steel components engineered to withstand the rigors of off-road driving. The control arms and track bars are designed for adjustability, allowing fine-tuning of suspension geometry to optimize handling and tire wear. The use of D2 bushings with PTFE liners ensures smooth articulation without the need for regular greasing, reducing maintenance and extending component life.

The progressive coil springs are engineered to provide a balanced response, firm enough for off-road stability yet compliant enough for everyday driving comfort. This combination of durable materials and thoughtful engineering results in a suspension system that enhances both performance and reliability.

Installation & Fitment:

The RS66114B kit is designed for direct fitment on Jeep Wrangler models from 2007 through 2017 and Jeep Wrangler JK models from 2018. Installation requires the use of the RS720003 exhaust cross-over pipe for 2012–2017 models when the front driveshaft is not replaced. The kit is compatible with four-wheel-drive configurations and works seamlessly with Rancho shock absorbers specified for this system.

Installation is straightforward for experienced mechanics or off-road enthusiasts familiar with suspension upgrades. Proper alignment after installation is recommended to ensure optimal handling and tire wear.

What’s Included

• Progressive rate coil springs (front and rear)
• Fully adjustable short control arms with D2 bushings
• Adjustable heavy-duty front and rear track bars with D2 bushings
• All necessary mounting hardware and instructions

Ideal For:

This suspension system is ideal for Jeep Wrangler owners seeking a reliable lift kit that improves off-road capability without sacrificing daily driving comfort. It suits enthusiasts who require enhanced ground clearance, better axle control, and a durable suspension setup for trail riding, rock crawling, or overlanding. The RS66114B is also a great choice for those upgrading their suspension with Rancho shocks for a complete performance package.

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.