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Teraflex Sport ST4 4.5" Suspension Lift for 18-20 Jeep Wrangler JL Unlimited

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Fitting a Jeep Wrangler Unlimited JL with 37” tires does not take much. However, there are multiple components to consider if you want to do it comfortably. The Teraflex Sport ST4 4.5" Suspension Lift allows you to lift your Jeep without sacrificing the ride. This complete lift kit is 100% bolt-on for easy installation. It was designed specifically for the four-door Unlimited Wrangler JL, and includes Bump Stop Strike Pad Shims for every trim level. Teraflex includes their Front Control Arm Geometry Correction Brackets for improved suspension travel and driveline angle. Like other Sport ST kits, the ST4 reduces Noise, Vibration, and Harshness (NVH). For the best stability and handling, the ST3 is also available with Teraflex’s Falcon SP2 Monotube and Piggyback Shocks. Falcon SP2 shocks are precision-engineered for a specific vehicle and lift applications. They feature Teraflex’s proprietary Volume Optimized Damping (VOD) for race-inspired performance and comfort. Teraflex backs their lifts with a Limited Lifetime Warranty.

*Note maximum tire diameter for Sport/Sahara: 35”

*Note maximum tire diameter for Sport/Sahara with Front & Rear Bump Stop Strike Pad Shim Kit (Part Number 1959300) Sold Separately: 37”

*Note maximum tire diameter for Rubicon: 37”


Versatile Lift: The “ST” in “Sport ST4” stands for Street and Trail. This full suspension lift kit is equally at home on and off road.

User Friendly Installation: No cutting, drilling, or welding is required to install this lift. All components simply bolt on using existing mounting locations.

Suspension Geometry: The included Teraflex Front Control Arm Geometry Correction Brackets (part number 1938125) reuse factory control arms, and improve handling. By lowering the control arm mount, these brackets maximize suspension travel while optimizing driveline angle.

Four Door Application: Teraflex engineered the Sport ST4 kit specifically for the Wrangler Unlimited JL. The coil springs and Falcon SP2 Shocks (when selected) are specifically tuned to the vehicle for precision handling and comfort.

Installation Notes
Installation Difficulty:
Level 2Intermediate

4.5” wheel backspacing or less is required

Bumper-to-fender wind deflectors/splash guards must be removed in order to fit 35” or larger tires on models with plastic bumpers

Installation Time: 10-11 hours
4.5" Suspension Lift
Control Arm Drop Brackets
Falcon Bump Stops
Piggyback Shocks
Parts Included
  • Front Coil Spring Pair
  • Rear Coil Spring Pair
  • Front Control Arm Drop Brackets
  • Forged Front Track Bar Bracket
  • Forged Rear Track Bar Bracket
  • Front Falcon Bump Stops
  • Rear Falcon Bump Stops
  • Front Bump Stop Strike Pad Kit
  • Front Bump Stop Strike Pad Shim Kit
  • Rear Bump Stop Strike Pad Kit
  • Rear Bump Stop Strike Pad Shim Kit
  • Front Sway Bar End Links
  • Rear Sway Bar End Links
  • Front Brake Line Anchors
  • Installation Hardware
  • Falcon SP2 Shocks (when selected)
Limited Lifetime Warranty
  • Features: None
  • Shocks Included: Without Shocks or With Shocks
  • Max Tire Size: 37
  • Lift Height Range: 3 - 4.5 inch
  • Included Parts: Brake Line Brackets, Bump Stop Extensions, Bump Stops, Coil Springs, Control Arm Brackets, Hardware, Sway Bar Endlinks
*Please make a selection above to view weight, specs of a specific product
  • Jeep Wrangler Unlimited 4-Door (JL)

  • 2020 Jeep Wrangler Unlimited 4-Door (JL)
  • 2019 Jeep Wrangler Unlimited 4-Door (JL)
  • 2018 Jeep Wrangler Unlimited 4-Door (JL)

Teraflex Sport ST4 4.5" Suspension Lift Options

Part NumberCatalog #Price
161400016190.0145Without Shocks$1,275.99
161403116190.0147With Falcon SP2 3.1 Piggyback Shocks$2,575.99
161403316190.0149With Falcon SP2 3.3 Piggyback Shocks$2,975.99
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