Superlift Dual Rate Coil Springs

2018–2019 Jeep Wrangler JL Rubicon 2 Door

Part #: 591

Overview

The Superlift Dual Rate Coil Springs provide a 2.5-inch rear lift specifically engineered for the 2018–2019 Jeep Wrangler JL Rubicon 2 Door. Designed by off-road enthusiasts for off-road enthusiasts, these coil springs enhance your Jeep’s suspension performance without compromising on-road comfort. Whether you’re tackling rugged trails or cruising city streets, Superlift’s dual rate technology ensures a balanced ride quality and improved handling.

Superlift has been a trusted name in suspension systems since 1975, combining decades of experience with a passion for trucks, Jeeps, and SUVs. These coil springs are crafted to meet the demands of Jeep owners who want reliable lift and superior performance that lasts.

Key Features

Superlift’s Dual Rate Coil Springs are engineered to deliver a smooth, controlled lift while maintaining factory-like ride quality. Key features include:

• 2.5-inch rear lift height tailored for Jeep Wrangler JL Rubicon 2 Door models
• Dual rate design for progressive spring rates that balance comfort and performance
• Improved off-road articulation and ground clearance
• Maintains on-road drivability and handling characteristics
• Durable powder-coated finish for corrosion resistance
• Precision wound coils for consistent spring rate and longevity
• Designed and tested by off-road enthusiasts to meet real-world demands
• Direct fitment with no modifications required

Construction & Design

Superlift Dual Rate Coil Springs are manufactured using high-quality steel alloys and advanced coil winding techniques to ensure strength and durability. The dual rate design features variable coil spacing and thickness, allowing the springs to provide a softer initial rate for comfort and a firmer secondary rate for load support and off-road capability. The powder-coated finish protects against rust and environmental damage, extending the life of the springs even in harsh conditions.

Every spring is engineered to exacting standards to maintain consistent ride height and performance throughout its service life, ensuring your Jeep maintains optimal suspension geometry and handling characteristics.

Installation & Fitment

These coil springs are a direct replacement for the rear springs on 2018–2019 Jeep Wrangler JL Rubicon 2 Door models. Installation requires standard suspension disassembly and reassembly procedures, typically performed by a professional or experienced DIYer. No additional modifications or special tools are necessary, making it a straightforward upgrade to achieve a reliable 2.5-inch lift.

For best results, it is recommended to have the vehicle’s alignment checked and adjusted after installation to ensure proper handling and tire wear.

What's Included

• One pair of Superlift Dual Rate Rear Coil Springs (2.5-inch lift)
• Installation instructions

Ideal For

This product is ideal for Jeep Wrangler JL Rubicon 2 Door owners seeking a moderate rear lift to improve off-road clearance and suspension articulation without sacrificing daily driving comfort. It suits enthusiasts who want a reliable, durable suspension upgrade that enhances both on-road and off-road performance while maintaining factory-like ride quality.

Superlift Suspension Systems builds lift kits, leveling systems, shocks, and steering components engineered to increase ground clearance while keeping suspension geometry and control dialed in for real off-road use. It’s a staple brand for truck and SUV enthusiasts who want stronger stance and trail capability without giving up stability and ride confidence on the street.