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🧾 Overview
The TeraFlex JL 4-Door 4.5 Inch Coil Spring Base Lift Kit is a foundational lift solution engineered to deliver significant ride height and tire clearance using only essential lift components. Designed for builders planning a staged suspension upgrade, this base kit focuses strictly on lift—not full geometry correction—making it ideal for custom setups where control arms and adjustable track bars will be added separately.
At 4.5 inches of lift, this system enables aggressive tire fitment and increased ground clearance for demanding off-road use. However, because it does not include geometry-correcting components, TeraFlex requires the addition of Front Control Arm Sport Brackets or adjustable Alpine (IR) control arms, along with front and/or rear HD Forged Adjustable Track Bars, to achieve proper drivability and handling.
Note: Shocks are not included. Falcon Performance Shocks or TeraFlex 9550 VSS Twin-Tube Shocks are recommended, as they are engineered specifically to work with TeraFlex lift coil springs for optimal compression and rebound control.
✔ 4.5" coil spring base lift kit
✔ Significant increase in ground clearance and tire capability
✔ Designed for staged, custom suspension builds
✔ Requires additional components for proper geometry
✔ Bolt-on installation using factory mounting points
🛠 Installation
- Direct bolt-on installation using factory mounting locations. No cutting or welding required. Designed as a base lift solution—additional suspension components are required for proper geometry and drivability. Professional installation and alignment are recommended.
📌 Specs
- Key Features & Benefits
- Lift coil springs provide aggressive ride height and clearance
- Base-level components allow full customization with aftermarket arms and track bars
- Front and rear track bar axle brackets help recenter axles
- Bump stop extensions protect suspension components at full compression
- Sway bar links maintain proper sway bar geometry at increased lift height
- Ideal foundation for advanced off-road suspension builds
📘 Specifications
- Brand: TeraFlex
- System Type: Coil Spring Base Lift Kit
- Lift Height: 4.5 inches
- Position: Front & Rear
- Vehicle Platform: Jeep Wrangler Unlimited JL
- Body Style: 4-Door
- Shock Compatibility: Not included (Falcon Performance Shocks or TeraFlex 9550 VSS recommended)
- Installation Type: Bolt-on
- Maximum Tire Size (with proper bump stop configuration):
- Sport / Sahara Fenders
- 35" – 3" front / 2.5" rear
- 37" – 3.5" front / 4" rear
- Rubicon Fenders
- 37" – 2.5" front / 3" rear
- Aftermarket High Fenders
- 39"+ (varies by wheel offset and suspension setup)
📦 What’s Included (What’s in the Box)
- Front Components
- 4.5" front lift coil springs (PN 1864400)
- Front track bar axle bracket – 4.5" lift (PN 1953500)
- 2" front bump stop strike pad extension kit (PN 1959500)
- 0.5" front bump stop strike pad shim kit (PN 1959300)
- 10.75" front sway bar link kit (PN 744500)
- Rear Components
- 4.5" rear lift coil springs (PN 1864300)
- Rear track bar axle bracket – 2.5–4.5" lift (PN 1953600)
- 2" rear bump stop strike pad extension kit (PN 1959500)
- 0.5" rear bump stop strike pad shim kit (PN 1959300)
- 11.5" rear sway bar link kit with swivel stud (PN 1764300)
- Additional
- All required mounting hardware
🛡 Warranty
- Manufacturer-backed warranty provided by TeraFlex.
⚠️ Fitment Notes
- Jeep Wrangler Unlimited JL (4-Door)
⚠️ Fitment Notes
- This is a base lift kit and does not provide full suspension geometry correction. Front Control Arm Sport Brackets or adjustable Alpine control arms and adjustable track bars are required for proper handling. Shocks are not included. Professional installation and alignment are strongly recommended.