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🧾 Overview
The TeraFlex Sport ST4 4.5″ Suspension System for the Jeep Wrangler Unlimited JL 392 is engineered specifically to support the added weight, power, and performance demands of the factory 6.4L V8 platform. Designed exclusively for the JL 392, this system delivers significant ground clearance, increased suspension travel, and controlled handling for both aggressive trail use and confident on-road driving.
Built on the proven Sport ST (Street & Trail) platform, the ST4 system allows for aggressive tire fitment while maintaining stability, braking control, and predictable ride quality. This no-shock configuration gives owners the flexibility to select dampers that best match their driving style, terrain, and performance goals.
Note: Shocks are not included. Compatible shocks designed for a 4.5″ lift are required.
✔ JL 392–specific Sport ST4 suspension system
✔ Engineered for increased V8 weight and torque
✔ 4.5" lift height for aggressive stance and tire clearance
✔ Balanced street comfort with trail-ready performance
✔ No-shock configuration allows custom damper selection
🛠 Installation
- Bolt-on installation using factory mounting locations. No cutting or welding required. Estimated installation time is 6–8 hours using basic hand tools. Professional installation and post-install alignment are strongly recommended for optimal performance and safety.
📌 Specs
- Key Features & Benefits
- JL 392–specific tuning supports increased engine weight and power
- Sport ST geometry delivers stable handling on-road and off-road
- Increased lift height improves ground clearance and obstacle clearance
- Allows fitment of larger tires for enhanced off-road capability
- Maintenance-free design reduces noise, vibration, and harshness
- Bolt-on system preserves factory mounting points
📘 Specifications
- Brand: TeraFlex
- System Type: Sport ST4 Suspension Lift System
- Lift Height: 4.5 inches
- Position: Front & Rear
- Vehicle Platform: Jeep Wrangler Unlimited JL 392
- Body Style: 4-Door
- Engine Requirement: Factory 392 V8
- Shock Compatibility: Not included (4.5″ lift–specific shocks required)
- Installation Type: Bolt-on
📦 What’s Included (What’s in the Box)
- Front & Rear Sport ST4 suspension components
- Lift springs and supporting hardware
- All required mounting hardware
- Not Included:
- Shocks
- Wheels and tires
🛡 Warranty
- Manufacturer-backed warranty provided by TeraFlex.
⚠️ Fitment Notes
- Jeep Wrangler Unlimited JL 392 (4-Door)
⚠️ Fitment Notes
- Fits JL 392 models only. Does not fit non-392 JL models or 2-door JL vehicles. Shocks are not included and must be selected for a 4.5″ lift. Tire fitment depends on wheel offset and suspension configuration. Professional alignment is required after installation.