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Rubicon Express 4.5 Standard Coil Spring Suspension Lift Kit for 18-20 Jeep Wrangler JL Unlimited

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4.5 Standard Coil Spring Suspension Lift for Jeep Wrangler JL 4 Door is a great entry into the trail ready performance you have come to know from Rubicon Express. Replacing your stock springs with Custom tuned linear rate heavy duty coil springs to absorb the trail impacts of the weekend warrior and provide smooth consistent, on road handling and predictability in everyday use. The Standard kit comes with an adjustable front track bar for axle center correction and improves steering geometry. Extended sway bar links front and rear are included along with your choice of Rubicon Express Twin Tube Shocks or the competition ready 2.5 monotube high-performance shocks. The kit retains the stock control arms but is easily upgradeable if your budget only allows the bare essentials for a solid suspension lift to start. The Standard 4.5 Coil Spring Lift comes with a rear track bar bracket for correcting axle center to prevent tail wag, and bump stop extensions and alignment cams for caster adjustments.

Providing 3.5 inches of lift on Jeep Wrangler Rubicon JL 4 Door Models and 4.5 inches of lift on Jeep Wrangler JL 4 Door Sport and Sahara packages, Standard lifts allow clearance of up to a 37 inch tires on all Wrangler JL 4 Door trim level packages. With FMVSS 126 Certification, these suspension systems will retail all your Wrangler’s advanced safety features. Rubicon Express coil spring lift suspension systems are proudly made in the USA and are backed by the Rubicon Express Lifetime Advantage Warranty.


Heavy Duty Adjustable Front Track Bar:

  • Gives Maximum Clearance for Steering Componentry and re-centers the front Axle Position Relative to the Body after installation of the Lift
  • Adjustable sleeved collar precise centering of the front axle
  • Designed specifically for JLs with up to 4-1/2 inches of lift
  • Designed for full clearance throughout suspension cycle
  • Chromoly Steel Construction
  • Urethane bushings
  • Premium Powder Coat Finish for maximum corrosion resistance

Extended Front and Rear Sway Bar Endlinks :

  • Links are Longer for Proper Sway Bar Geometry
  • Their Design Allows for Maximum Suspension Articulation without contact to shock or OE Backspaced Wheel

Frame-mounted Rear Track Bar Bracket:

  • Corrects geometry for 3.5+ lifts
  • Bolt-on application

Bump Stop Extensions :

  • 2” front lower axle bump stop extensions
  • 2-3/8" rear lower axle bump stop extensions
  • Alignment Cams also included to adjust Caster

Shock Options Available:

2.5 Extreme Duty Monotube Shocks:

  • 2-1/2” body outer diameter with full bore piston to maximize damping capability Tuned Specific to Rubicon Express Spring Rates to Maximize Ride Quality and Suspension Travel Hydraulic rebound cut off to eliminate harsh top-out
  • 6061-T6 Billet Aluminum Black Anodized Components
  • 7/8" OD-hardened chrome shaft for increased durability and strength Non-reservoir floating piston separates nitrogen and oil to eliminate loss from Cavities.
  • Durable Powdercoat Finish
  • Shaft Triple Seal Redundancy

Rubicon Express Twin Tube Shocks:

  • 2" Slim Black Painted Body with Rubber Bushings and Black Protective Boot
  • Nitrogen-Charged
  • 1-3/8" Banded Piston
  • 5/8" Nitrocarbon rod
  • Vehicle-specific valve code
Installation Notes
Installation Difficulty:
Level 3Advanced
Non-Rubicon Trim Levels require installation of additional Included Bump Stop Spacers front and rear for 37" tires

The front engine crossmember must be removed and will not be reinstalled due to drive shaft clearance

Installation Time: 3-6 hours
Parts Included
  • Front Coil Spring Pair
  • Rear Coil Spring Pair
  • Adjustable Front Track Bar
  • Front and Rear Extended Sway Bar End Link Pair
  • Frame Mounted Rear Track Bar Bracket
  • Bump Stop Extensions
  • Alignment Cams
  • Choice of Rubicon Express Twin Tube Shocks or Extreme Duty 2.5 Monotube Performance Shocks
  • Installation Hardware
Limited Lifetime Warranty
  • Color: Gray
  • Features: Linear Coil Springs
  • Shocks Included: Without Shocks or With Shocks
  • Max Tire Size: 37
  • Lift Height Range: 3 - 4.5 inch
  • Included Parts: Bump Stop Extensions, Coil Springs, Front Endlink, Front Track Bar, Hardware, Rear Track Bar Bracket, Sway Bar Endlinks or Coil Springs, Front Endlink, Front Track Bar, Hardware, Rear Track Bar Bracket, Sway Bar Endlinks
*Please make a selection above to view weight, dimensions, 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)
Does Not Fit 2007-2018 Jeep Wrangler JK or JK Unlimited Models

Rubicon Express 4.5 Standard Coil Spring Suspension Lift Kit Options

Part NumberCatalog #Price
JL714216300.7123Without Shocks $832.99
JL7142T16300.7124w/ Rubicon Express Twin Tube Shocks$1,040.99
JL7142NR16300.7125w/ 2.5 Extreme Duty Monotube Shocks$1,832.99
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