Home - Return to Previous Page

3.5" Suspension System | J-Konnect | 2018-2021 Jeep Wrangler JL (4 Door)


J-Konnect J-Rated 3.5" Suspension System Lift Kit

  • Front/Rear Dual Rate Coil Springs (standard or HD) designed to great ride quality across any terrain. HD springs offer additional load capacity for vehicles equipped with winch bumper, fullsize spare, roof rack, etc.
  • Front/Rear Gas Shocks (JPSEC or FOX 2.0 Performance Series) specifically valved for this suspension system for improved performance on and off-road.
  • Front Adjustable Track Bar and Rear Track Bar Bracket to correct axle positioning under vehicle.
  • Front Sway Bar Quicker Disconnects and Rear Sway Bar Links for increased offroad articulation.
  • Front/Rear Bump Stop Extensions to properly limit suspension up travel.
  • Front/Rear J-Link Lower Control Arms to add strength and correct caster.
5-7 Hours
2 of 5 Difficulty
Pricing: $1,690.91

Customize Your Item

- Shock Selection -
 * required
- Front Coil Springs -
 * required
- Rear Coil Springs -
 * required
- Steering Stabilizer -
 * required
- J-Cal/Flashcal Programmer -
 * required


Building off of the J-Venture systems designed for equal parts on-road handling and off-road capability, the J-Konnect system takes strength and performance a step further by adding front and rear fixed length J-Link lower control arms. These lower control arms not only add front caster and rear wheelbase, they are a serious upgrade to the strength over the factory control arms. Built 2” x .250-wall DOM tubing while offering better NVH isolation with large factory style rubber bushings at both ends. These combined with the dual rate coil springs, specially valved gas shocks, adjustable track bar, quicker disconnects and more offer improved trail performance and strength while catering to on-road handling needs. Get connected with J-Konnect.


  1. Factory wheels cannot be reinstalled without wheel spacers
  2. HD front springs recommended for applications with aftermarket winch/bumper combo
  3. HD rear springs recommended for applications with rear mounted full size spare tire
  4. Will not fit 4xe models
  5. Will not fit Rubicon 392 models

Base Kit

Base Kit components include the following;

J-Konnect 3.5" Suspension System | 2018-2020 Jeep Wrangler JL (4 Door) - JSPEC123K
- JSPEC1311 1ea - 2018+ JL 3.5in J-Konnect Box Kit
- JKS1621 1ea - JL Fixed Front LCA - J-Link
- JKS1671 1ea - JL Fixed Rear LCA - J-Link
- JSPEC1351 1ea - 2018+ JL 3.5in Front Coil Spring Kit - STD
- JSPEC1359 1ea - 2018+ JL 3.5in Rear Coil Spring Kit - STD
- JSPEC9322 2ea - JSPEC- 26.20 x 15.67 x 2-3/8 - EB1/EB1
- JSPEC9329 2ea - JSPEC- 29.78 x 17.59 x 2 - EB1/EB1

Max Tire

Rubicon Models (all kits)
37x12.50 17x9, 18x9, 20x9 5" BS

Non-Rubicon Models (all kits)
35x12.50 17x9, 18x9, 20x9 5" BS

* Other tire/wheel sizes can be used, however may require additional modification.

Shipping Information

  • Item Requires Shipping
  • 149.0 lbs.
  • W12.0000” x H12.0000” x L36.0000”