Rubicon Express Coil Spring Set

Rubicon Express Coil Spring Sets: Trail-Proven Lift for Your Jeep

When it comes to upgrading your Jeep's suspension, few decisions matter more than the coil springs you choose. Rubicon Express has spent decades earning a reputation as one of the most trusted names in Jeep suspension, and their coil spring sets are a prime example of why serious off-roaders keep coming back to the brand. Founded in 1996 by Rustin Smith with the singular vision of creating ultimate Jeep suspension systems, Rubicon Express has grown from a passionate pursuit of off-road excellence into a globally trusted name in the Jeep community.

Two Spring Philosophies: Linear and Progressive Rate

Rubicon Express offers coil spring sets in two distinct designs to match different driving styles and build goals. Linear springs — also known as standard rate springs — are engineered with a constant spring rate that stays the same as the spring compresses. This linear rate of compression allows for optimum traction and a more predictable handling feel, though they will have a slightly rougher ride when compared to progressive springs.

For Jeep owners who want the best of both worlds on-road and off, the progressive rate option is a compelling upgrade. As the spring compresses, the spring rate increases to allow for a smooth ride over small bumps while preventing harsh bottoming on full compression, and the extended end length of the springs maximizes droop travel. Progressive coils also allow for a lower center of gravity to provide better handling on the street with increased stability in off-camber situations, and feature longer extended lengths when compared to linear rate coils, providing full articulation without unnecessary height.

Build Quality That Goes the Distance

Rubicon Express coils are designed to provide the best in ride quality without sacrificing durability and load capacity. All coils are powder coated silver, made with the most advanced processes in the industry, and every coil is tested and checked for compliance to their rigid specifications. On select progressive-rate models, high tensile steel produces a durable set with reduced sag and fatigue, topped with a powder coat for protection against corrosion and abrasion for exceptional service life. Additionally, springs are engineered to the finest tolerances and specially heat tempered to remove metal stresses, then silver powder coated to resist road grime, corrosion, and rust.

Wide Lift Range Across Jeep Platforms

Whether you're building a mild street-able Jeep or a serious rock crawler, Rubicon Express coil spring sets span a broad lift range to suit your goals. Options cover modest 2.5-inch lifts all the way up to aggressive 7.5-inch front lift springs, with popular mid-range sets at 3.5 and 4.5 inches. Coverage spans generations of beloved Jeep models, including the Cherokee XJ/MJ, Grand Cherokee ZJ, Wrangler TJ, Wrangler JK, and Wrangler JL, making it easy to find a direct-fit set for nearly any build.

Lifetime Warranty Confidence

Rubicon Express extends a Lifetime Warranty to their full line of products to be free from defects in materials and workmanship. Rubicon Express also offers a Lifetime Replacement Warranty on most suspension products, subject to the terms and conditions. This commitment to standing behind their coil springs long after the sale reflects the brand's confidence in their manufacturing standards — and gives Jeep enthusiasts the peace of mind to push their suspension hard on the trail.

• Linear and progressive rate spring options for street and trail use
• Heat-tempered, high-tensile steel construction for long-lasting performance
• Silver or black powder-coated finish for corrosion resistance
• Lift ranges from 2.5" to 7.5" across multiple Jeep platforms
• Every coil tested to strict manufacturing specifications
• Backed by a Lifetime Warranty