Rancho Short Arm Suspension System Component

2018–2023 Jeep Wrangler Unlimited (Various Trims)

RS66125B-3

Overview:

The Rancho Short Arm Suspension System Component is engineered to enhance the off-road capability and on-road comfort of your Jeep Wrangler Unlimited from 2018 through 2023. Designed as part of a comprehensive lift kit solution, this component delivers 4.5 inches of additional ground clearance, allowing for larger tires and improved wheel travel. Ideal for enthusiasts seeking superior performance on rugged trails or enhanced stance on the street, this system balances durability with ride quality through progressive rate coil springs and adjustable control arms.

Whether you’re tackling rock crawling, trail riding, or daily driving, the Rancho Short Arm Suspension System Component provides a reliable upgrade that maintains factory-level comfort while boosting your Jeep’s off-road prowess.

Key Features:

This suspension component offers a range of advanced features designed to maximize performance and longevity:

• Front and rear corner-specific progressive rate coil springs tuned for optimal on-road comfort and off-road articulation
• Adjustable upper and lower control arms with Rancho’s D2 high-articulation, grease-free bushings to reduce wear and eliminate maintenance
• Heavy-duty front and rear adjustable track bars for precise alignment and improved handling
• Extended sway bar end links and bump stop spacers to accommodate increased suspension travel
• Compatible with up to 37-inch tires for aggressive off-road setups
• Complies with NHTSA FMVSS126 safety standards for stability and control
• Requires aftermarket driveshaft when used with specific Rancho shocks featuring Dynamic Rebound Spring for maximum front axle articulation
• Includes all necessary mounting hardware for a complete installation

Construction & Design:

Rancho’s Short Arm Suspension System Component is built to withstand the rigors of off-road use with high-strength, low-alloy steel brackets that ensure long-lasting durability. The bolt-on design simplifies installation without compromising structural integrity. The use of progressive rate coil springs provides a smooth transition from comfortable daily driving to aggressive trail performance, while the grease-free D2 bushings allow for high articulation without the need for regular maintenance.

Every element of the system is engineered to work in harmony, delivering enhanced ground clearance and wheel travel without sacrificing ride quality or vehicle stability.

Installation & Fitment:

This component is designed specifically for Jeep Wrangler Unlimited models from 2018 to 2023, including trims such as Sahara, Rubicon, Sport, Moab, Willys, and special editions like the 80th Anniversary and High Altitude. It excludes diesel engine variants. Non-Rubicon models will experience a slightly taller lift height compared to Rubicon trims.

Installation requires the complete Rancho RS66125B master kit, which includes three boxes; this component is Box 3 of 3. When paired with Rancho RS55067 or RS999067 shocks featuring Dynamic Rebound Spring, an aftermarket driveshaft is necessary to achieve maximum front axle articulation. Front shocks RS55065 or RS999065 do not require this modification. Professional installation is recommended to ensure proper fitment and alignment.

What's Included:

• Front and rear corner-specific progressive rate coil springs
• Upper and lower adjustable control arms
• Heavy-duty front and rear adjustable track bars
• Extended sway bar end links
• Bump stop spacers
• All required mounting hardware

Ideal For:

This suspension system component is perfect for Jeep Wrangler Unlimited owners who want to upgrade their vehicle’s suspension for enhanced off-road capability without sacrificing on-road comfort. It suits enthusiasts who frequently engage in rock crawling, trail riding, or those who desire a more aggressive stance with larger tires up to 37 inches. It is also ideal for those seeking a durable, maintenance-free suspension upgrade backed by Rancho’s limited lifetime warranty.

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.