Rock Krawler Suspension RK08186K 4.5 Inch Rear Coil Spring Kit for Jeep JLU 392

The Rock Krawler Suspension RK08186K is a high-performance rear coil spring kit engineered specifically for Jeep Wrangler JLU (4-door) models equipped with the 6.4L 392 V8 engine. This kit provides approximately 4.5 inches of lift, designed to accommodate the unique weight distribution and factory lift characteristics of the 392-powered Wrangler.

Key Features:

• Triple-rate progressive coil spring design for optimal on-road comfort and off-road performance
• Engineered specifically for JLU 392 models with increased spring rates to handle the heavier V8 powertrain
• Proper free-length design maximizes articulation while keeping springs firmly seated in coil buckets
• Minimizes spring settling for consistent ride height over time
• Designed to work with correction wedges to reduce inherent spring bow

392-Specific Engineering:

Due to the factory lift already present on 392 models, this kit will result in a ride height approximately 1 inch taller than a comparable V6 Wrangler Rubicon with the same lift specification. Rock Krawler's engineering accounts for the additional weight of the 392 engine and transmission, providing appropriate spring rates for both daily driving and aggressive off-road use.

This rear coil spring kit is ideal for Jeep JLU 392 owners looking to improve ground clearance, accommodate larger tires, and enhance suspension articulation while maintaining the ride quality and load-carrying capability needed for overlanding, towing, or trail use.