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Rock Krawler X-Factor Series Flex System 3.5" Lift Kit for 18-20 Jeep Wrangler JL Unlimited

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Suspension articulation, or flex, is a crucial part of off-roading a Jeep. Go where other four door Wrangler JL owners would not dream of going with the Rock Krawler X-Factor Series Flex System 3.5" Lift Kit. This complete bolt on system was designed to add 3.5” of lift with minimal maintenance yet optimal durability. Rock Krawler uses triple rate coil springs for ultimate performance under any load. Triple rate springs are great for highway driving, off-roading, and towing. The X-Factor Series adjustable lower control arms have up to 90 degrees of misalignment for ultimate flex. Rock Krawler includes geometry correction wedges for both the front and rear springs. These spacers eliminate spring bow caused by lifting Jeeps.

X-Factor Series: What sets Rock Krawler’s X-Factor lifts apart form their other kits are their adjustable lower control arms. These arms offer a total of 90 degrees of misalignment without binding.

Complete Bolt-In Kit: All of the included components have been designed to install with no drilling or modifications to the Jeep. Each part has been tested for quality and fitment to ensure the best ride on any terrain.

Triple Rate Coil Springs: Rock Krawler triple rate coil springs are designed to handle any condition under any load. They work great for towing.

Wrangler JL Sport/Sahara Editions:

  • 37” Tires- Recommended 4.5” Wheel Backspacing
  • 38” Tires- Recommended 3.5” Wheel Backspacing

Wrangler JL Rubicon:

  • 37” Tires-Recommended 4.5” Wheel Backspacing
  • 40” Tires- Recommended 3.5” Wheel Backspacing

Shock Information:

  • Recommended Front Shock Length: 18-19” Collapsed/31” Extended
  • Recommended Rear Shock Length: 20-21” Collapsed/32” Extended
Installation Notes
Installation Difficulty:
Level 3Advanced
Extended Front CV Driveshaft Required
Installation Time: 4-6 hours
Parts Included
  • (4) Triple Rate Coil Springs
  • (2) Front Adjustable Lower Control Arms
  • (2) Front Spring Pads
  • (1) Adjustable Front Track Bar
  • (2) Front Sway Bar Disconnects
  • (2) Sway Bar Link Relocation Brackets
  • (2) Sway Bar Disconnect Straps
  • (2) Rear Spring Pads
  • (2) Extended Rear Sway Bar Links
  • (1) Adjustable Rear Track Bar
  • (1) Bolt-On Rear Track Bar Relocation Bracket
Limited Lifetime Warranty
  • Features: Adjustable Control Arms, Front Sway Bar Disconnects, Progressive Coil Springs, Short Arm
  • Shocks Included: Without Shocks or With Shocks
  • Max Tire Size: 40
  • Lift Height Range: 3 - 4.5 inch
  • Included Parts: Coil Spacer, Coil Springs, Front Lower Control Arms, Front Track Bar, Hardware, Rear Track Bar, 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)

Rock Krawler X-Factor Series Flex System 3.5" Lift Kit Options

Part NumberCatalog #Price
16189.2710Without Shocks$1,506.69
16189.2730With RRD Spec Twin Tube Shocks$1,974.50
16189.2750With 2.25 RRD Shocks$2,454.52
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