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Vehicle Fitment: Tailored for Jeep Wrangler TJ & LJ
This kit fits both 2WD and 4WD versions of the 2003–2006 Jeep Wrangler, including long-wheelbase (LJ) models. Each component is precisely engineered to accommodate TJ/LJ suspension geometry and driveline dynamics, ensuring compatibility with both gas and diesel variants.
Fitment Table
| Year | Make | Model | Drive | Engine |
|---|---|---|---|---|
| 2003–2006 | Jeep | Wrangler | 2WD | Diesel |
| 2003–2006 | Jeep | Wrangler | 2WD | Gas |
| 2003–2006 | Jeep | Wrangler | 4WD | Diesel |
| 2003–2006 | Jeep | Wrangler | 4WD | Gas |
Complete Suspension Package: No Guesswork, Just Performance
The JKS JSPEC System delivers a cohesive suspension strategy rather than pieced-together parts. Designed with performance and longevity in mind, each component enhances comfort, strength, and control.
Included Components
- Front & Rear Dual Rate Coil Springs (Model-specific)
- Custom-Valved JSPEC Gas Shocks (4 included)
- JKS Quicker Disconnect Front Sway Bar Links
- Fixed Rear Sway Bar Links
- Adjustable Front Track Bar with DOM Tubing
- Heavy-Duty Rear Track Bar Relocation Bracket
- J-Link Front Lower Control Arms (2" x .250" wall tubing)
- J-Flex Rear Upper Adjustable Control Arms with Forged Flex Ends
- Front Brake Line Relocation Brackets
- Front and Rear Bump Stop Extensions
Key Performance Features
- 3" lift height for added clearance and 33” tires
- Dual-rate coil springs provide comfort and compression support under load
- JSPEC shocks matched to spring dynamics for optimal ride
- Greaseable Quicker Disconnects with high-misalignment ends
- Track bar and control arm upgrades prevent axle shift and driveline issues
- Direct bolt-on installation with detailed instructions
Performance Comparison
| Feature | Factory Setup | JKS JSPEC System |
|---|---|---|
| Ride Quality | Basic, Harsh Off-Road | Balanced with Dual-Rate Springs |
| Shock Performance | Stock Gas Shocks | JSPEC Tuned Gas Shocks |
| Sway Bar Function | Fixed Factory Links | Quick Disconnects + Rear Correction |
| Axle Centering | Non-Adjustable | Adjustable Front Bar + Rear Bracket |
| Control Arm Strength | OEM Tube Arms | DOM Steel + Forged Flex Ends |
Quick Specs
- Lift Height: 2–3.5” Total
- Front Lift Method: Coil Springs
- Rear Lift Method: Coil Springs
- Shocks Included: Yes (4 Gas Charged)
- Recommended Tire: 33 x 12.5
- Recommended Wheel: 15 x 8 with 3.75" Backspacing
- Install Time: 4–5 Hours
- Difficulty Level: 2 of 5
- Part Number: JSPEC115K
Important Notes
- Coil springs are body-style specific (TJ vs. LJ)
- Trimming may be required when running 33" tires
- Not compatible with factory wheels due to rear sway bar link interference
- PROP 65 WARNING: Cancer and Reproductive Harm – California Residents
The Ultimate TJ/LJ Lift Kit – All in One Box
With the JKS 3-Inch JSPEC Suspension System, you’re not just lifting your Jeep—you’re upgrading every corner of its suspension with a cohesive package engineered to perform. Get the comfort you want for the road and the strength you need for the trail, all with the assurance of JKS quality.
LiftKits4Less.com: Your One-Stop Online Shop for High-Quality Suspension Lift Kits
