ReadyLIFT SST 4" Lift Kit | 2007-2018 Jeep Wrangler JK 4WD

ReadyLIFT SST 4-Inch Lift Kit for 2007-2018 Jeep Wrangler JK 4WD

Bottom Line Up Front: The ReadyLIFT 69-6400 SST Lift Kit is a premium suspension upgrade engineered specifically for Jeep Wrangler JK owners seeking true 35-inch tire clearance, increased ground clearance, and enhanced off-road capability without sacrificing everyday drivability. Featuring progressive wound coil springs, sway bar end links, track bar relocation hardware, and shock extensions, this complete system delivers a true 4-inch front lift and 3-inch rear lift while maintaining the refined handling characteristics Jeep owners expect.

Because: ReadyLIFT's MOAB-tested suspension system utilizes four precision-crafted coil springs combined with geometry-correcting suspension components designed specifically for 2007-2018 Wrangler JK 4WD models. The system supports up to 35-inch tires on standard fender configurations and up to 37-inch tires when paired with flat fenders, making it one of the most versatile lift solutions available for serious trail enthusiasts and overland builds.

"A properly engineered coil spring lift delivers superior articulation, ride quality, and long-term durability compared to basic spacer-only systems." — Common guidance from Jeep suspension engineers and off-road vehicle builders.

The ReadyLIFT SST 69-6400 was developed to bridge the gap between entry-level budget lifts and highly complex long-arm suspension systems. By incorporating progressive wound coil springs, extended sway bar links, bump stop extensions, and a rear track bar relocation bracket, this kit improves suspension travel and wheel articulation while maintaining predictable on-road behavior.

For Jeep owners building an overland rig, trail-focused Wrangler, or daily-driven adventure vehicle, the additional ride height improves approach angles, breakover clearance, and obstacle clearance while allowing larger wheel and tire combinations. The durable powder-coated finish helps protect suspension components against corrosion, road salt, mud, and harsh seasonal conditions.

Unlike many economy lift systems, the ReadyLIFT SST platform is engineered around preserving factory suspension geometry wherever possible. Shock extensions allow continued use of factory shocks while maintaining ride characteristics, helping reduce overall upgrade costs without compromising suspension performance.

The result is a lift system that delivers the aggressive stance Jeep enthusiasts want while maintaining the reliability and drivability required for daily use, long-distance travel, and demanding off-road environments.

Technical Specifications

Vehicle Fitment

• Make: Jeep
• Model: Wrangler JK
• Body Style: 2-Door
• Years: 2007-2018
• Drive Type: 4WD

• Make: Jeep
• Model: Wrangler Unlimited JK
• Body Style: 4-Door
• Years: 2007-2018
• Drive Type: 4WD

Fitment Notes:

• Fits 2007-2018 Jeep Wrangler JK 4WD models.
• Fits both 2-door and 4-door Wrangler Unlimited models.
• Supports up to 35-inch tires with appropriate wheel specifications.
• Supports up to 37-inch tires when combined with flat fender systems.
• 2012-2018 models may require driveshaft and exhaust modifications.
• Does not fit Jeep Wrangler JL models.
• Does not fit 2WD applications.
• Kit includes shock extensions and is designed to retain factory shocks.

Installation Notes

• Bolt-on installation with no cutting or welding required.
• Professional wheel alignment is recommended immediately after installation.
• Verify driveshaft clearance on 2012+ models.
• Inspect brake line routing and suspension travel during installation.
• Confirm wheel backspacing prior to mounting 35-inch tires.
• Retorque all suspension hardware after initial break-in period.

Frequently Asked Questions

Will this kit fit both 2-door and 4-door JK models?

Yes. The ReadyLIFT 69-6400 is engineered for both Wrangler JK and Wrangler Unlimited JK 4WD platforms.

Can I run 35-inch tires?

Yes. ReadyLIFT recommends up to 35-inch tires with standard fenders and up to 37-inch tires with flat fenders.

Does this kit include shocks?

No. The 69-6400 kit includes shock extensions that allow continued use of factory shocks.

Will factory ride quality be maintained?

The progressive-wound coil springs are designed to provide excellent on-road comfort while improving off-road capability.

Do 2012+ JK models need additional modifications?

Some 2012-2018 applications may require driveshaft and exhaust modifications depending on vehicle configuration and usage.

SKU: 69-6400