Rock Krawler JL45XF-4 4.5" X Factor System without Shocks for 18-26 Jeep Wrangler JL Unlimited 4-Door
Proven X-Factor Suspension Geometry: Designed to keep axles properly centered and steering behavior consistent through articulation and hard trail use.
Fully Adjustable Control Arms: Allows precise tuning of caster, pinion angle, and wheelbase for proper suspension geometry and drivetrain alignment.
Dual-Rate Springs Tuned for JL Unlimited: Provides stable handling during normal driving while allowing efficient suspension movement off-road.
Heavy-Duty Construction for Demanding Terrain: Built with reinforced components and robust joints designed to withstand repeated trail stress.
Designed to Support Larger Tire Builds: Serves as a dependable suspension foundation for JL Unlimited builds focused on clearance, control, and trail performance.
Many states have laws that limit the maximum height of a lifted vehicle. Never exceed the legal height limit.
The Rock Krawler 4.5" X-Factor Suspension System is built for Jeep Wrangler JL Unlimited owners who demand strength, control, and consistent suspension performance in demanding terrain. Engineered specifically for the 4-door platform, this system is designed around Rock Krawler’s proven X-Factor geometry to maintain proper axle placement, controlled suspension movement, and predictable handling throughout the full range of articulation. The result is a suspension system that performs confidently on technical trails while remaining composed during normal driving.
Fully adjustable control arms allow precise correction of caster, pinion angle, and wheelbase to ensure the suspension operates correctly at its intended ride height. Dual-rate coil springs are tuned to support the added weight of the JL Unlimited while allowing the suspension to cycle smoothly over uneven terrain. With heavy-duty components throughout, the 4.5in X-Factor System provides a strong, reliable foundation for larger tire setups and aggressive off-road use.
- (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
- Features: Adjustable Control Arms or Air Bumpstops
- 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 Springs, Front Lower Control Arms, Front Upper Control Arms, Hardware, Rear Lower Control Arms, Rear Upper 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 Shock Mounts, Shock Absorbers, Sway Bar Endlinks
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 4.5" X Factor System Options
| Part Number | Catalog # | Shock Option | Price | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 16189-4244 | Without Shock | $2,776.51 | |||||||
| 16189-4245 | With 2.25 RRD Shock | $4,037.93 | |||||||
| 16189-4246 | With Coilover | $6,885.68 |
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