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Durable Coil Springs for Maximum Articulation and Stability
The heart of this 4-inch lift system lies in Zone’s precision-engineered coil springs. Designed to flatten completely under compression and rebound to their original height, these 4-door-specific springs ensure no sag over time—delivering long-lasting ride height and consistent suspension travel. With this much lift, you’ll gain room for larger tires while maximizing flex in technical off-road conditions.
Precision Steering and Axle Centering
A heavy-duty adjustable front track bar with durometer-specific urethane bushings allows for proper centering of the front axle. Paired with rear track bar relocation brackets, this setup ensures both axles are aligned correctly at the new ride height. Cam washers are also included to increase caster, contributing to improved on-road tracking and stability—without fear of slipping like other adjustable cam systems.
FOX 2.0 Performance Shocks for Superior Damping
This kit includes front and rear FOX 2.0 IFP Series Shocks specifically valved for the Jeep JK platform. These monotube shocks feature an internal floating piston design that separates nitrogen gas from the shock oil, eliminating fade and maximizing responsiveness. The included shock boot covers provide additional protection against trail debris and road grime, extending the life of the shock shafts.
Rear Suspension Enhancements
Rear extended sway bar links with high-performance urethane bushings reduce body roll and improve stability, while 2-inch bump stop extensions increase wheel travel without compromising control. Zone also includes brake line relocation brackets to accommodate the increased suspension range safely and effectively.
Fitment Guide
| Years | Make | Model | Drive | Engine |
|---|---|---|---|---|
| 2007–2018 | Jeep | Wrangler 4-Door (JK) | 4WD | Gas |
Key Features
- Full 4-inch lift with 4-door specific coil springs
- Heavy-duty adjustable front track bar with urethane bushings
- Rear track bar relocation brackets for axle alignment
- Cam washers included for front-end alignment and caster correction
- FOX 2.0 IFP Series front and rear shocks tuned for JK performance
- Brake line relocation and bump stop extensions included
- Rear sway bar links with urethane bushings; front links reused from factory
- Shock boot covers protect against debris and rock damage
Quick Specs
| Spec | Detail |
|---|---|
| Front Lift Height | 4" |
| Rear Lift Height | 4" |
| Lift Method | Coil Springs |
| Install Time | 4–5 Hours |
| Difficulty Level | 2 of 5 |
| Recommended Wheel Size | 16 x 8 |
| Backspacing | 4.5" |
| Max Tire Size | 35 x 12.50 |
| Part Number | 98450921x2 / 98450951x2-39 |
Important Installation Notes
- Fits all 4-door JK models including Rubicon, Sahara, and Sport
- Factory wheels cannot be reused due to rear sway bar link interference
- 2012–2018 models with stock front driveshaft require exhaust extension kit J5305
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