Rock Krawler RK07964K 4.5" Rear Coil Spring Kit for Diesel JLU 4-Door Wrangler

The Rock Krawler RK07964K is a 4.5" rear coil spring lift kit specifically engineered for the added weight of the EcoDiesel engine found in 2018-present Jeep Wrangler JLU 4-Door models. Unlike generic lift springs that simply add ride height, these coil springs are purpose-built to deliver improved on-road comfort and off-road performance without compromise.

Rock Krawler's rear coil springs are designed to minimize settling over time and feature a triple-rate spring design that works to maximize effective suspension travel while ensuring the spring stays firmly seated in the coil bucket at full droop. All JLU systems include rear spring correction pads that reduce the factory spring bow inherent in the stock setup, helping to maintain proper axle alignment and on-road handling characteristics.

Kit Includes:

• (2) Rock Krawler JL Rear Coil Springs — diesel-rate tuned for 4.5" of lift
• (2) JL Rear Spring Correction Pads — reduce factory spring bow and maintain alignment

Key Features:

• Diesel-specific spring rate to properly support the heavier EcoDiesel powertrain
• Triple-rate coil design maximizes suspension travel and off-road articulation
• Correction pads included to address factory spring bow and center the rear axle
• Designed to minimize spring settling for consistent, long-term lift height
• Compatible with Rock Krawler short-arm, mid-arm, and long-arm suspension systems
• Bolt-on installation — no cutting or welding required

Rock Krawler Suspension is based in Latham, New York and is 100% dedicated to building high-performance Jeep suspension components. Their products are engineered to perform on the street and on the trail, making this rear coil spring kit an ideal upgrade for diesel Wrangler JLU owners looking to add lift height while maintaining ride quality.