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🧾 Overview
The TeraFlex JL 4-Door 3.5 Inch Sport ST3 Suspension System is a complete Street & Trail lift engineered to deliver excellent ride quality, confident handling, and reliable off-road capability for the Jeep Wrangler Unlimited JL. Built on the proven Sport ST platform, this system focuses on correcting suspension geometry while remaining maintenance-free and fully bolt-on.
Front Control Arm Sport Frame Brackets restore proper caster on taller lifts to improve steering feel and reduce brake nose dive. Front and rear lower track bar brackets recenter the axles and optimize roll center for improved stability and reduced body roll. Combined with lift coil springs, progressive bump stops, and sway bar upgrades, the ST3 system provides smooth on-road manners with trail-ready articulation.
Note: Shocks are not included. Falcon Performance Shocks are recommended for optimal compression, rebound, and overall vehicle stability.
✔ 3.5" Sport ST3 street & trail suspension system
✔ Geometry-correcting front control arm frame brackets
✔ Improved steering response and reduced brake nose dive
✔ Balanced ride comfort with increased off-road flex
✔ Maintenance-free, bolt-on design
🛠 Installation
- Direct bolt-on installation using factory mounting points. No cutting or welding required. Designed for install-and-drive convenience. Professional installation and alignment are recommended for best performance and handling.
📌 Specs
- Key Features & Benefits
- Sport ST lift coil springs tuned for ride quality and durability
- Front Control Arm Sport Frame Brackets restore caster and pinion angles
- Front and rear lower track bar brackets recenter axles and optimize roll center
- Microcellular progressive bump stops reduce harsh bottom-out
- Front sway bar quick disconnects improve off-road articulation
- Rear sway bar links maintain proper sway bar geometry
- Reduced noise, vibration, and harshness (NVH) for daily driving comfort
📘 Specifications
- Brand: TeraFlex
- System Type: Sport ST3 Suspension System
- Lift Height: 3.5 inches
- Position: Front & Rear
- Vehicle Platform: Jeep Wrangler Unlimited JL
- Body Style: 4-Door
- Shock Compatibility: Not included (Falcon Performance Shocks recommended)
- Installation Type: Bolt-on
- Maximum Tire Size (with proper bump stop configuration):
- Sport / Sahara Fenders
- 35" – 3" front / 2.5" rear
- Rubicon Fenders
- 35" – 2" front / 2" rear
- 37" – 2.5" front / 3" rear
📦 What’s Included (What’s in the Box)
- Front Components
- 3.5" front lift coil springs (PN 1863000)
- Sport Frame Bracket Kit – front control arm (PN 1938125)
- Front lower track bar bracket – 2.5–3.5" lift (PN 1953250)
- Progressive front bump stops (PN 1959200)
- 2" front bump stop strike pad extension kit (PN 1959500)
- 0.5" front bump stop strike pad shim kit (PN 1959300)
- Front sway bar quick disconnect kit (PN 1764000)
- Brake line anchor kit – front (PN 1101255)
- Rear Components
- 3.5" rear lift coil springs (PN 1863100)
- Rear lower track bar bracket – 2.5–4.5" lift (PN 1953600)
- Progressive rear bump stops (PN 1959200)
- 2" rear bump stop strike pad extension kit (PN 1959500)
- 0.5" rear bump stop strike pad shim kit (PN 1959300)
- Rear sway bar link kit (PN 1764300)
- Additional
- All required mounting hardware
🛡 Warranty
- Manufacturer-backed warranty provided by TeraFlex.
⚠️ Fitment Notes
- Jeep Wrangler Unlimited JL (4-Door)
⚠️ Fitment Notes
- Shocks are not included. Professional installation and post-install alignment are recommended. Tire fitment depends on fender type, wheel offset, and bump stop configuration.