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Rubicon Express 3.5/4.5 Super-Flex Coil Spring Suspension System for Jeep Wrangler JL 4-Door

Starting at
$2,203.99
Description
JL 3.5/4.5 Super-Flex Coil Suspension System for Jeep Wrangler JL 4 Door is a perfect answer for the Wrangler owner looking to greatly improve flexibility and off-road capability without greatly compromising road manners and comfort for your everyday Jeep needs. Rubicon Express has set them selves apart from the crowd, with the Super-Flex control arm design manufactured in the USA from 4130 chromoly tubing, including durable PTMEG bushings, the heavy duty and fully adjustable control arms are an increased length over stock control arms to provide proper caster when lifted. Super-Flex control arms are extremely rugged to handle the obstacles and offer unrestrained movement of your axles on more aggressive trail runs. With included adjustable Front Track Bar, and Extreme Duty Sway Bar Disconnects, Rubicon Express Super-Flex kits also include custom tuned for the JL, linear rate coil springs, frame mounted rear track bar bracket to correct axle center, extended rear sway bar links, bump stop extensions, and all necessary hardware for installation.


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, Super-Flex lifts allow clearance of up to a 37 inch tires on all Wrangler JL 4 Door trim level packages, and are tuned for improved ride, great handling, and better stability and predictability both on and off-road. 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.

Details

Adjustable Super-Flex Control Arms:

  • Increased length over OE arm to provide proper caster and wheel position when lifted
  • 1-3/4” diameter .120 wall 4130 chromoly construction lowers
  • 1-1/4” diameter .120 wall 4130 chromoly construction uppers
  • OE Brake Line Bracket incorporated
  • PTMEG bushings and Super-Flex joint for increased durability and articulation

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

Strong and Convenient Sway Bar Disconnects :

  • Fast, easy and tool-free design to disconnect your front sway bar for increased front axle articulation
  • Zinc-plated snap pin makes disconnect easy and the tapered post and spherical bushing make reconnecting the front sway bar easy regardless of irregular terrain
  • Heavy duty threaded body allows adjustment for different lift heights and easy setting of sway bar angle Pre-installed grease fittings for easy service and quiet operation
  • Silver powdercoat finish

Extended 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

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: 4-8 hours
Parts Included
  • Front Coil Spring Pair
  • Rear Coil Spring Pair
  • Super-Flex Front and Rear Adjustable Control Arms
  • Adjustable Front Track Bar
  • Extreme Duty Sway Bar Disconnects
  • 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
Warranty
Limited Lifetime Warranty
  • Features: Front Sway Bar Disconnects, Linear Coil Springs or Linear Coil Springs
  • Color: Gray
  • Shocks Included: Without Shocks or With Shocks
  • Max Tire Size: 37
  • Lift Height Range: 3.5-4.5
  • Included Parts: Bump Stop Extensions, Coil Springs, Front Lower Control Arms, Front Track Bar, Front Upper Control Arms, Hardware, Rear Lower Control Arms, Rear Upper Control Arms, Sway Bar Endlinks or Bump Stop Extensions, Coil Springs, Front Endlink, Front Lower Control Arms, Front Track Bar, Front Upper Control Arms, Hardware, Rear Lower Control Arms, Rear Track Bar Bracket, Rear Upper Control Arms, Sway Bar Endlinks or Bump Stop Extensions, Coil Springs, Front Lower Control Arms, Front Upper Control Arms, Hardware, Rear Lower Control Arms, Rear Track Bar Bracket, Rear Upper Control Arms, Sway Bar Endlinks
*Please make a selection above to view specs on a specific product
  • Jeep Wrangler Unlimited 4-Door (JL)

  • 2019 Jeep Wrangler Unlimited 4-Door (JL)
  • 2018 Jeep Wrangler Unlimited 4-Door (JL)
Does Not Fit Jeep Wrangler JK or JKU Models 2007-2018

Rubicon Express 3.5/4.5 Super-Flex Coil Spring Suspension System Options

Part NumberCatalog #Shock OptionPrice
16300.7120Without Shocks $2,203.99
16300.7121w/ Rubicon Express Twin Tube Shocks$2,411.99
16300.7122w/ 2.5 Extreme Duty Monotube Shocks$3,203.99
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