Rancho Rear Coil Spring Kit

2018–2023 Jeep Wrangler Unlimited JL 4-Door

RS80128B

Overview:

The Rancho Rear Coil Spring Kit is engineered specifically for 4-door Jeep Wrangler JL models from 2018 through 2023, including both Rubicon and non-Rubicon trims. Designed to enhance your Jeep’s suspension, these corner-specific progressive rate coil springs provide a balanced combination of superior on-road comfort and rugged off-road capability. Whether you’re upgrading to larger tires or seeking a more level stance while hauling or towing, this kit ensures your Wrangler maintains optimal ride height and stability without the need for body or fender modifications.

Ideal for Jeep enthusiasts who demand both performance and comfort, the Rancho coil springs accommodate tire sizes up to 35 inches or larger, delivering up to 3.5 inches of lift on Rubicon models and up to 4.5 inches on non-Rubicon variants. This makes them a perfect upgrade for those looking to improve ground clearance and off-road articulation without compromising daily drivability.

Key Features:

Rancho’s rear coil springs are packed with features that enhance your Jeep Wrangler’s suspension performance and durability:

• Corner-specific progressive rate design for balanced ride quality and handling
• Provides up to 3.5-inch lift on Rubicon models and up to 4.5-inch lift on non-Rubicon models
• Accommodates larger tires without requiring body or fender modifications
• Maintains a level stance even when hauling heavy loads or towing
• Constructed from high-strength steel for long-lasting durability
• Shot peened and heat treated to resist fatigue and improve spring life
• Powder-coated finish to resist rust and corrosion in harsh environments
• Easy installation with included hardware for a hassle-free upgrade
• Compatible with a wide range of Jeep Wrangler Unlimited trims from 2018 to 2023
• Backed by Rancho’s limited one-year warranty for peace of mind

Construction & Design:

Each coil spring in this kit is crafted from premium high-strength steel, ensuring exceptional resilience and longevity under demanding conditions. The springs undergo a shot peening process that enhances surface strength and fatigue resistance, followed by heat treatment to optimize spring performance and durability. A durable powder-coated finish protects against rust and corrosion, making these springs well-suited for off-road adventures and exposure to the elements.

The corner-specific progressive rate design means each spring is tuned to provide the ideal balance of stiffness and flexibility at each rear corner of the vehicle. This engineering approach improves ride comfort on paved roads while delivering the necessary support and articulation for off-road terrain.

Performance & Sound

By lifting the rear of your Jeep Wrangler JL, these Rancho coil springs improve ground clearance and suspension travel, allowing for larger tires and better off-road capability. The progressive rate design helps maintain a smooth, controlled ride on highways and city streets, reducing harshness and body roll. While primarily focused on suspension performance, the springs contribute to a more confident and stable driving experience without introducing additional noise or vibration.

Installation & Fitment:

The Rancho Rear Coil Spring Kit is designed for straightforward installation on 4-door Jeep Wrangler JL models from 2018 to 2023, including Rubicon and non-Rubicon trims. The kit includes two rear coil springs and all necessary hardware, allowing for a direct bolt-in replacement without the need for cutting or modifications. However, vehicle height may vary depending on tire size, aftermarket accessories such as bumpers or winches, and whether the Jeep is a 2-door or 4-door model. Professional installation is recommended to ensure proper fit and alignment.

What's Included:

• Two rear coil springs, corner-specific progressive rate
• Installation hardware
• Limited one-year warranty documentation

Ideal For:

• Jeep Wrangler JL owners seeking to install larger tires without body modifications
• Off-road enthusiasts requiring improved ground clearance and suspension articulation
• Drivers who haul heavy loads or tow and want to maintain a level stance
• Those looking to enhance both on-road comfort and off-road performance
• Owners of 2018–2023 Jeep Wrangler Unlimited models including Rubicon, Sahara, Sport, Willys, and special editions

Fitment Summary

This kit fits the following Jeep Wrangler Unlimited JL 4-door models from 2018 to 2023:

• 80th Anniversary (2021)
• Freedom (2021, 2023)
• High Altitude (2021–2023)
• Islander (2021)
• Moab (2018–2019)
• Rubicon (2018–2023)
• Sahara (2018–2023)
• Sahara Altitude (2021–2023)
• Sport (2018–2023)
• Sport Altitude (2021–2023)
• Sport S (2018–2023)
• Willys (2021–2023)
• Willys Sport (2021–2023)

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.