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Rock Krawler 3.5in X Factor System for 18-26 Jeep Wrangler JL Unlimited 4-Door

Starting at
$2,776.51
Description

X-Factor Geometry Designed for the JL Unlimited – Engineered specifically for the 4-door JL to maintain correct axle positioning, controlled suspension movement, and predictable steering through articulation and daily driving.

Shock-Free Configuration for Custom Builds – Supplied without shocks, this system allows you to select valving and shock length that best matches vehicle weight, driving style, and terrain requirements.

Fully Adjustable Control Arms – Adjustable arms allow precise correction of caster, pinion angle, and wheelbase, ensuring proper suspension geometry and drivetrain alignment at a 3.5-inch ride height.

Dual-Rate Coil Springs for Balanced Performance – Dual-rate springs are designed to provide controlled on-road handling while allowing the suspension to flex efficiently when navigating uneven or technical terrain.

Heavy-Duty Construction for Demanding Use – Built with reinforced components and robust joints, this system is designed to withstand the added weight and stress of the JL Unlimited platform during repeated off-road use.

Many states have laws that limit the maximum height of a lifted vehicle. Never exceed the legal height limit.

Details

The Rock Krawler 3.5in X-Factor Suspension Systemis engineered for JL Unlimited owners building a Jeep around capability, control, and long-term durability. Designed specifically for the 4-door platform, this system focuses on proper suspension geometry, axle positioning, and predictable handling through the full range of suspension travel. Rock Krawler’s X-Factor design allows the Jeep to remain composed on uneven terrain while maintaining confident street manners, making it well suited for rigs that see both trail time and daily use.

Fully adjustable control arms allow precise correction of caster, pinion angle, and wheelbase, ensuring the suspension works as intended at its intended ride height. Dual-rate coil springs provide a controlled feel during normal driving while allowing the suspension to flex efficiently when the terrain becomes more demanding. Built with heavy-duty components to support the added weight of the JL Unlimited, this system serves as a dependable foundation for serious off-road use.

Installation Notes
Installation Difficulty:
Skill Level 3 IconLevel 3Advanced
Installation Time: 4-6 hours
Parts Included
  • (4) Triple rate coil springs
  • (2) Front adjustable lower control arms
  • (2) Front adjustable upper control arms
  • (2) Front spring pads
  • (1) Adjustable front track bar
  • (2) Sway bar disconnects
  • (2) Sway bar link relocation brackets
  • (2) Sway bar disconnect straps
  • (2) Rear adjustable lower control arms
  • (2) Rear adjustable upper control arms
  • (2) Rear spring pads
  • (2) Extended rear sway bar links
  • (1) Adjustable rear track bar
  • (1) Bolt-on rear track bar relocation bracket
Warranty
Limited Lifetime Warranty
  • Features: Adjustable Control Arms
  • Shocks Included: Without Shocks or With Shocks
  • Max Tire Size: 37
  • Lift Height Range: 3 - 4.5 inch
  • Included Parts: Coil Springs, Front Lower Control Arms, Front Upper Control Arms, Hardware, Rear Lower Control Arms, Rear Upper Control Arms, Sway Bar Endlinks or Coil Spacer, Extended Sway Bars, Front Lower Control Arms, Front Upper Control Arms, Hardware, Rear Lower Control Arms, Shock Absorbers, Sway Bar Endlinks or Coil Springs, Front Lower Control Arms, Front Upper Control Arms, Hardware, Rear Lower Control Arms, Rear Upper Control Arms, Shock Absorbers, Sway Bar Endlinks
*Please make a selection above to view weight, dimensions, specs of a specific product
  • Jeep Wrangler Unlimited 4-Door (JL)

  • 2026 Jeep Wrangler Unlimited 4-Door (JL)
  • 2025 Jeep Wrangler Unlimited 4-Door (JL)
  • 2024 Jeep Wrangler Unlimited 4-Door (JL)
  • 2023 Jeep Wrangler Unlimited 4-Door (JL)
  • 2022 Jeep Wrangler Unlimited 4-Door (JL)
  • 2021 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 3.5in X Factor System Options

Part NumberCatalog #Shock OptionPrice
16189-4212Without Shock$2,776.51
16189-4214With 2.25 RRD Shocks$3,933.43
16189-4215With Coilovers$6,885.68
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