Rock Krawler JL45NL-4S1 4.5" X Factor No Limits System with RRD 2.25 Shocks for 18-26 Jeep Wrangler JL Unlimited 4-Door
No Limits X-Factor Geometry: Designed for maximum suspension travel while maintaining proper axle positioning, steering control, and consistent handling in demanding terrain.
Fully Adjustable Control Arms: Allows precise tuning of caster, pinion angle, and wheelbase to ensure correct suspension geometry and drivetrain alignment at increased ride height.
Dual-Rate Springs Tuned for JL Unlimited Weight: Provides controlled road manners while allowing the suspension to open up and articulate efficiently off-road.
Heavy-Duty Construction for Aggressive Use: Built with reinforced components and robust joints to withstand repeated stress from hard trail driving and technical obstacles.
Purpose-Built for Larger Tire Setups: Designed to serve as a dependable suspension foundation for JL Unlimited builds focused on clearance, articulation, 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 4.5in X-Factor No Limits Suspension System is designed for JL Unlimited owners building a Jeep for maximum capability, control, and suspension travel. Engineered specifically for the 4-door platform, this system is built around Rock Krawler’s proven X-Factor geometry to maintain correct axle placement, stable handling, and predictable steering throughout the full range of suspension movement. The No Limits design is intended for aggressive trail use where articulation, strength, and consistency matter most.
Fully adjustable control arms allow precise correction of caster, pinion angle, and wheelbase, ensuring the suspension operates as intended at a 4.5-inch ride height. Dual-rate coil springs are tuned to support the added weight of the JL Unlimited while allowing the suspension to cycle efficiently across uneven and technical terrain. With heavy-duty construction throughout, the No Limits system provides a solid foundation for larger tires and demanding off-road driving without sacrificing control on the road.
- (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) No Limits sway bar links
- (2) Rear adjustable lower control arms
- (2) Rear adjustable upper control arms
- (2) Rear spring pads
- (2) Extended rear sway bar links
- (1) Bolt-on rear track bar relocation bracket
- 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 Shock Mounts, 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 or Coil Spacer, 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 No Limits System Options
| Part Number | Catalog # | Shock Option | Price | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 16189-4247 | Without Shock | $2,932.48 | |||||||
| 16189-4248 | With 2.25 RRD Shock | $4,193.90 | |||||||
| 16189-4249 | With Coilovers | $6,972.44 |
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