Rancho One Box Front and Rear Suspension System

2007–2017 Jeep Wrangler / 2018 Jeep Wrangler JK

RS66119BR5

Overview:

The Rancho One Box Front and Rear Suspension System is a comprehensive upgrade designed specifically for 4-door Jeep Wrangler JK Unlimited models from 2007 through 2017, as well as the 2018 Jeep Wrangler JK. This 2-inch progressive sport suspension system enhances your Jeep’s off-road capability and on-road comfort, making it an ideal choice for trail enthusiasts and daily drivers alike. Featuring Rancho’s RS5000®X shocks and progressive rate coil springs, this kit improves vehicle control, reduces body roll, and provides additional ground clearance to tackle rugged terrain with confidence.

Whether you’re preparing for a weekend trail ride or seeking a smoother, more controlled driving experience on paved roads, this suspension system delivers a balanced performance upgrade that maintains compatibility with your Jeep’s factory electronic stability system and original equipment wheels and tires.

Key Features:

This suspension system combines advanced components engineered to enhance both off-road and on-road performance:

• Includes four Rancho RS5000®X shocks for superior damping and control front and rear
• 2-inch suspension lift designed to fit up to 33-inch tires; can accommodate 35-inch tires with trimming
• Front and rear progressive rate coil springs tuned for improved ride comfort and handling
• Front bump stops and rear brake line relocation brackets included for proper suspension travel and safety
• Compatible with Jeep’s factory electronic stability control system, preserving OE safety features
• Designed for use with 17-inch wheels featuring 4.5-inch backspacing (tire size may vary by manufacturer)
• Bolt-on installation with hardware included for a straightforward upgrade
• Complies with NHTSA FMVSS126 standards for vehicle stability
• Backed by Rancho’s limited lifetime warranty for long-term peace of mind

Construction & Design:

The Rancho suspension system is engineered with durability and performance in mind. The RS5000®X shocks feature advanced valving technology that reduces body roll and prevents rod overextension, ensuring consistent damping under demanding conditions. The progressive rate coil springs are specifically tuned to provide a smooth ride on pavement while offering the necessary support and articulation for off-road obstacles.

All components are built to withstand the rigors of trail use, with corrosion-resistant finishes and robust mounting hardware that ensure long-lasting reliability. The kit’s design maintains factory geometry and electronic system compatibility, preserving your Jeep’s handling characteristics and safety features.

Installation & Fitment:

The Rancho One Box Suspension System offers a bolt-on installation process that requires no major modifications, making it accessible for experienced DIYers and professional installers alike. The kit is engineered to fit 4-door Jeep Wrangler JK Unlimited models from 2007 to 2017 and the 2018 Wrangler JK, accommodating factory wheels and tires within specified size ranges.

While the system supports up to 33-inch tires out of the box, fitting 35-inch tires may require trimming of body components such as bumpers, sliders, or winches. The included brake line relocation brackets and bump stops ensure proper suspension travel and safety compliance.

What's Included:

• Four Rancho RS5000®X front and rear shocks
• Front and rear progressive rate coil springs
• Front bump stops
• Rear brake line relocation brackets
• All necessary mounting hardware

Ideal For:

This suspension system is perfect for Jeep Wrangler JK Unlimited owners seeking a reliable, well-engineered lift kit that enhances off-road capability without sacrificing on-road comfort. It is ideal for trail riders who want additional ground clearance and improved suspension control, as well as daily drivers looking to upgrade their Jeep’s handling and stance with a quality, factory-compatible solution.

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.