Clayton Off Road Rear Long Arm Upgrade Kit for 2004-2006 Jeep Wrangler LJ Unlimited

Is This for You?

• You're running 4–8" of lift on your LJ Unlimited and your rear short arm geometry is causing harsh ride quality, limited articulation, and accelerated wear on your rear control arm bushings — this rear-half long arm upgrade kit replaces the short arm geometry with longer control arms, rear frame brackets, and a 4-link axle truss, reducing rear suspension angles at lift height for a smoother ride and greater articulation.
• You want Currie Johnny Joints at the rear frame ends and GIIRO dual-durometer bushings at the axle ends — the Currie Johnny Joint provides 40° of unrestricted movement with Tough 88 urethane casing for shock absorption and NVH isolation; the GIIRO bushing at the axle end is maintenance-free, self-centering, and NVH-isolating for on-road comfort.
• You're upgrading from a short arm lift or replacing a failing rear long arm system and want a complete rear-half kit with everything included — this kit includes the rear frame brackets, upper and lower adjustable control arms, 4-link axle truss, and all hardware. No welding required.

The Result

• Complete rear-half long arm upgrade kit — rear frame brackets, upper and lower adjustable control arms, 4-link axle truss, and hardware. Full rear geometry conversion for LJ builds running 4–8" of lift.
• Currie Johnny Joints at frame ends (40°, Tough 88 urethane) + GIIRO dual-durometer bushings at axle ends — maintenance-free, NVH-isolating, self-centering. Lifetime warranty on all control arms.
• Designed for 4–8" of lift. No welding required for installation.

The COR-4807003 is Clayton Off Road's rear long arm upgrade kit for the 2004–2006 Jeep Wrangler LJ Unlimited, designed for builds running 4–8" of lift. This is a rear-half kit — it includes the rear frame brackets, upper and lower adjustable control arms, 4-link axle truss, and all hardware. The longer arm geometry reduces rear suspension angles at lift height compared to short arm geometry, resulting in a smoother on-road ride, greater off-road articulation, and reduced wear on related components. The frame-end joints are Currie Johnny Joints — 40° of unrestricted movement with Tough 88 urethane casing for shock absorption and NVH isolation that heim joints cannot provide. The axle-end joints are GIIRO dual-durometer bushings — maintenance-free, self-centering, and NVH-isolating. The 4-link axle truss reinforces the rear axle tube at the control arm mount locations. The upper and lower control arms are adjustable for precise geometry tuning. No welding required. Lifetime warranty on all control arms.

Audit Table

Verified Fitment (OFAS Standard)

✅ Fits 2004–2006 Jeep Wrangler LJ Unlimited — All Trims — Rear Long Arm Upgrade Kit, 4" to 8" Lift
❌ Does NOT fit Jeep Wrangler TJ (1997–2006, 2-Door) — LJ Unlimited only
❌ Does NOT fit Jeep Wrangler JK (2007–2018) — different rear suspension architecture
❌ Does NOT fit Jeep Wrangler JL (2018–2026) — different rear suspension architecture
❌ Not recommended for lifts below 4" or above 8" — verify geometry correction requirements for your specific lift height

Installation & Fabrication Notes

• No welding required for this rear long arm upgrade kit.
• Install the 4-link axle truss to the rear axle before installing the control arms — the truss reinforces the rear axle tube at the control arm mount locations.
• Install the rear frame brackets in the factory rear control arm frame mount locations.
• Install the upper and lower adjustable control arms and set initial length per Clayton's geometry specifications for your lift height.
• Set pinion angle and anti-squat geometry with the vehicle at ride height after full installation.
• Rear alignment (toe, thrust angle) must be verified after installation.
• Torque all control arm hardware at ride height, not at full droop or compression.
• Verify rear driveshaft angle and U-joint operating angles after installation — the longer arm geometry changes the pinion angle and may affect driveshaft operating angles.

Wheel & Tire Fitment

Compatible with standard LJ wheel and tire combinations at 4–8" of lift. Rear long arm geometry affects suspension travel and tire clearance — verify clearance at full droop and full compression with your specific tire size after installation.

Engineering Question: What is your current lift height on the LJ? This kit is designed for 4–8" of lift — if you're running less than 4", the long arm geometry correction may not be necessary, and if you're running more than 8", verify the arm length range covers your specific lift height. Also confirm your vehicle is a 2004–2006 LJ Unlimited (4-door, long wheelbase) — this kit does not fit the standard 2-door TJ or any JK/JL platform.