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Matched Rear Lift Springs Engineered to Complete Your Jeep Wrangler JL Suspension Build
The Rock Krawler RKRRK07015P provides 2.5 inches of rear lift for the 2018 to 2026 Jeep Wrangler JL two-door and JLU four-door, and is designed as the rear companion spring to Rock Krawler's RKRRK07014P front coil. The triple rate design of the RKRRK07015P provides a smooth on-road ride while supporting the rear axle's articulation demands on the trail. Like all Rock Krawler springs, the RKRRK07015P is built to prevent unseating at full droop and is finished in a durable black powder coat.
Key Features
- 2.5 inch rear lift for 2018-2026 Jeep Wrangler JL 2-Door and JLU 4-Door
- Triple rate spring design matched to the JL rear axle geometry
- Prevents spring unseating at full articulation
- Black powder coat corrosion-resistant finish
- 5-year warranty
- Sold as a pair, no drilling required
Vehicle Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2018-2026 | Jeep | Wrangler | JL 2-Door |
| 2018-2026 | Jeep | Wrangler | JLU 4-Door |
Specifications
| Detail | Value |
|---|---|
| Part Number | RKRRK07015P |
| Brand | Rock Krawler |
| Lift Height | 2.5 inches |
| Location | Rear |
| Spring Type | Triple Rate |
| Finish | Black Powder Coat |
| Quantity | Pair |
| Warranty | 5 Year |
| Fitment | 2018-2026 Jeep Wrangler JL 2-Door and JLU 4-Door |
| Condition | New |
| UPC | N/A |
What's Included
- Rock Krawler RKRRK07015P triple rate rear coil springs (pair)
About Rock Krawler
Rock Krawler is dedicated exclusively to Jeep suspension engineering and manufactures their spring systems in Vermont. The RKRRK07015P rear spring is the matched rear component for the Rock Krawler JL 2.5 inch front and rear lift system.
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Frequently Asked Questions
What is the RKRRK07015P?The Rock Krawler RKRRK07015P is a pair of triple rate rear coil springs providing 2.5 inches of lift for the 2018 to 2026 Jeep Wrangler JL two-door and JLU four-door. They are the matched rear spring to Rock Krawler's RKRRK07014P front spring for complete JL lift builds.
Can I run the RKRRK07015P rear springs with a different brand front spring on my JL?The RKRRK07015P can be used as a standalone rear spring, but Rock Krawler designs their front and rear springs as a matched system for optimal vehicle rake and geometry. Mixing brands may result in uneven lift or handling imbalance.
Does the RKRRK07015P rear spring support the weight of a full-size spare and heavy rear bumper?Rock Krawler designs their JL springs based on a standard Rubicon build configuration with rear bumper and full-size spare. For builds with heavier aftermarket rear bumpers or significant bed payloads, consider Rock Krawler's overland or heavy-duty rear spring options.
Is the RKRRK07015P compatible with JLU models with the heavy steel doors?The RKRRK07015P is designed for the standard JL and JLU coil spring perch dimensions. Vehicle weight variations from accessories and door choices affect final lift height but do not affect mechanical fitment of the spring.
Do I need a professional alignment after installing the RKRRK07015P rear springs?Yes. Any suspension lift installation should be followed by a professional four-wheel alignment to ensure correct geometry, safe handling, and even tire wear.
What shocks are compatible with the RKRRK07015P at 2.5in of rear lift on the JL?Rock Krawler recommends extended travel rear shocks appropriate for 2.5 inch lift height to maximize the spring's articulation range. Contact Rock Krawler or Black Ops Auto Works for compatible shock recommendations for your JL build.
Will the RKRRK07015P rear springs sag over time?Rock Krawler engineers their triple rate springs to minimize settling by using an appropriate free-length that keeps the spring under slight preload in the normal driving range. The 5-year warranty covers against spring failure and excessive settling.
Does the RKRRK07015P fit the Jeep Wrangler 4xe JLU?The 4xe JLU shares the same rear spring mounts as the standard JLU but carries additional weight from the hybrid battery pack. Consult Rock Krawler for confirmation that the RKRRK07015P provides the correct lift height on a 4xe build.
Installation Instructions
- Safely support the rear of the Jeep Wrangler JL on jack stands with the rear axle hanging freely.
- Support the rear axle with a floor jack and disconnect the rear sway bar end links.
- Remove the rear shock absorbers and lower the axle to remove the factory rear coil springs.
- Install the Rock Krawler RKRRK07015P triple rate rear springs, verifying seating in both coil buckets.
- Raise the axle, reconnect sway bar end links, and reinstall shocks.
- Lower the vehicle, verify ride height, and schedule a professional alignment.
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