Clayton Off Road Pro Series Rear Long Arm Upgrade Kit | 5" Wheelbase Stretch | Weld-On Brackets | Double-Adjustable Arms | 4-Link Axle Truss | 1997–2006 Jeep Wrangler TJ / 2004–2006 LJ Unlimited | SKU: COR-4805302
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
Verified Fitment
This kit fits the 1997 through 2006 Jeep Wrangler TJ (2-Door) and the 2004 through 2006 Jeep Wrangler LJ Unlimited (4-Door). It is the first product in the Clayton session to extend the wheelbase — the 5" rear stretch physically moves the rear axle 5 inches rearward from the factory position, which affects body fitment, fender clearance, rear driveshaft length, and body panel fit. Plan for these build consequences before ordering.
| Year Range | Make | Model | Configuration | Notes |
|---|---|---|---|---|
| 1997–2006 | Jeep | Wrangler TJ | 2-Door | Welding required; custom exhaust required; 5" rear stretch requires body and fender modification |
| 2004–2006 | Jeep | Wrangler LJ Unlimited | 4-Door | Welding required; custom exhaust required; 5" rear stretch requires body and fender modification |
Before ordering — confirm all five:
- Vehicle is a 1997–2006 TJ or 2004–2006 LJ Unlimited — not a JK or JL
- A certified welder is available for the weld-on rear frame brackets
- A front CV-style driveshaft with SYE kit is sourced and ready
- A custom exhaust can be fabricated or sourced
- Body modifications, fender clearance, and rear driveshaft length changes are planned and budgeted as part of this build
Verify fitment by text: (469) 407-7538
Does NOT Fit
| Exclusion | Reason |
|---|---|
| Jeep Wrangler JK (2007–2018) | Different rear frame and suspension architecture |
| Jeep Wrangler JL (2018–2026) | Different rear suspension architecture |
| Jeep Gladiator JT | Different rear suspension architecture |
| Buyers without access to a certified welder | Rear frame brackets are weld-on — tack welds or temporary hardware are not acceptable for load-bearing rear suspension brackets |
| Buyers without a front CV driveshaft and SYE kit sourced | Required before driving after installation |
| Buyers who have not planned for body modifications | The 5" rear stretch moves the rear axle 5" rearward — body fitment, fender clearance, and rear driveshaft length all change. These are required build consequences, not optional considerations. |
| Buyers who have not planned for a custom exhaust | Factory exhaust is not compatible with the 5" stretch and long arm geometry |
Verify fitment by text: (469) 407-7538
Component Specifications
| Specification | Detail |
|---|---|
| Part number | COR-4805302 |
| Application | Pro Series rear long arm upgrade kit with 5" wheelbase stretch — TJ (1997–2006) and LJ Unlimited (2004–2006) |
| Wheelbase stretch | 5 inches — rear axle moves 5" rearward from factory position |
| Frame brackets | Weld-on rear frame brackets |
| Control arms | Double-adjustable — both ends independently adjustable for pinion angle and anti-squat tuning |
| Frame-end joint | Currie Johnny Joint — 40° movement, Tough 88 urethane casing, shock-absorbing, NVH-isolating |
| Axle-end joint | GIIRO dual-durometer bushing — softer outer for NVH isolation, stiffer inner for lateral load resistance, maintenance-free, self-centering |
| Axle truss | 4-link rear axle truss — reinforces rear axle tube at control arm mount locations |
| Installation | Welding required — rear frame brackets are weld-on |
| Exhaust | Custom exhaust required |
| Driveshaft | Front CV-style driveshaft + SYE kit required |
| Front axle truss | Clayton D30 front truss highly recommended; aftermarket axles require compatible truss |
| Warranty | Lifetime — all control arms |
| Unit weight | 53 lb |
| Shipping dimensions | 32" × 8" × 8" |
What Is and Is NOT Included
Included:
| Component |
|---|
| Weld-on rear frame brackets |
| Double-adjustable rear control arms (pair — upper and lower) with Currie Johnny Joint frame ends and GIIRO axle-end bushings |
| 4-link rear axle truss |
| Hardware per Clayton specification |
Not Included:
| Item | Notes |
|---|---|
| Front CV-style driveshaft and SYE kit | Required before driving after installation — source separately |
| Custom exhaust | Required — factory exhaust will not clear the 5" stretch and long arm geometry |
| Rear driveshaft | The 5" rear wheelbase stretch changes the rear driveshaft length — a custom or extended rear driveshaft is required. Source separately. |
| Body modification hardware | The 5" stretch requires body fitment and fender clearance modifications — plan and source separately |
| Clayton D30 front truss | Highly recommended — install before welding axle-side upper arm mount. Sold separately. |
| Aftermarket axle truss | Trucks with aftermarket rear axles must source a truss specific to their axle |
| Professional welding labor | Certified welder required — not included |
Critical Compatibility
| Condition | Interaction | Action Required |
|---|---|---|
| 5" rear wheelbase stretch — build scope | Moving the rear axle 5" rearward changes more than suspension geometry. The rear driveshaft must be lengthened or replaced to span the new distance. Body fitment at the rear of the vehicle changes — wheel wells, fenders, and body panels may need modification or relocation to clear the repositioned axle and tires. This is a comprehensive build modification, not a suspension-only change. | Plan and budget for rear driveshaft, body, and fender modifications as integral parts of this build before ordering. |
| Weld-on rear frame brackets — permanent | The rear frame brackets weld permanently to the TJ/LJ frame. Full-penetration welds are required on all contact surfaces. Tack welds are not adequate for load-bearing suspension brackets at this level. | Engage a certified welder with off-road chassis fabrication experience. |
| 4-link axle truss — install before bracket weld | The rear axle truss must be installed on the rear axle tube before the control arm mounts are finalized. The truss reinforces the axle tube at the control arm mount locations. | Install included axle truss before attaching control arms. |
| Custom exhaust — mandatory | The 5" stretch repositions the rear axle and the long arm brackets in locations that conflict with the factory TJ/LJ rear exhaust. A custom exhaust is required before the truck can be driven. | Plan custom exhaust fabrication concurrently with this build. |
| Front CV driveshaft + SYE kit | Required for the same reason as other weld-on long arm systems — the geometry change exceeds the operating angle of a standard U-joint front driveshaft. | Source and install simultaneously. |
| Double-adjustable arm geometry setting | Both ends of each arm are independently adjustable. Set pinion angle, anti-squat, and arm length at ride height per Clayton's specifications. Incorrect geometry at ride height degrades handling. | Set all parameters at ride height after full installation. |
| D30 front truss | Highly recommended for Dana 30 front axle builds — reinforces the front axle tube at the upper arm mount point. Aftermarket axle owners must source a compatible truss. | Install before welding any front axle mounts. |
Installation Notes
Skill level: Expert — professional fabrication required. This is the most scope-intensive build in the Clayton session. In addition to the suspension fabrication requirements shared with other weld-on kits, the 5" stretch introduces rear driveshaft and body modification requirements that extend this beyond a pure suspension project.
Phase 1 — Planning (complete before any parts are ordered):
- Plan rear driveshaft extension or custom driveshaft for the 5" stretched wheelbase.
- Plan body and fender modifications for the repositioned rear axle position.
- Plan custom exhaust routing.
- Confirm front CV driveshaft with SYE kit is sourced.
- Confirm Clayton D30 front truss or compatible aftermarket axle truss is sourced.
Phase 2 — Axle truss installation:
- Install the 4-link rear axle truss on the rear axle tube at the control arm mount locations before welding any mounts.
Phase 3 — Rear frame bracket weld-out:
- Position the weld-on rear frame brackets for 5" stretch per Clayton's installation instructions.
- Verify bracket position and angle before welding.
- Weld full-penetration on all bracket-to-frame contact surfaces.
- Apply weld-through primer and chassis paint to all bare metal at weld zones.
Phase 4 — Control arm installation and geometry:
- Install double-adjustable control arms at initial length per Clayton's geometry specifications.
- Set pinion angle and anti-squat at ride height.
- Torque all hardware at ride height.
Phase 5 — Driveshafts, exhaust, and body:
- Install extended/custom rear driveshaft.
- Install front CV driveshaft with SYE kit.
- Complete custom exhaust.
- Complete body and fender modifications.
Phase 6 — Rear alignment:
- Verify rear alignment — toe and thrust angle.
- Inspect full suspension travel for binding or body/component contact.
Required tools and services:
| Item | Required |
|---|---|
| Vehicle lift rated for TJ/LJ | Yes |
| Certified welder | Yes |
| Weld-through primer and chassis paint | Yes |
| Exhaust fabrication or custom exhaust shop | Yes |
| Custom rear driveshaft fabrication | Yes |
| Body modification capability | Yes |
| Torque wrench | Yes |
| Geometry setting equipment | Yes |
| Alignment equipment | Yes |
Common Questions
What does a 5" wheelbase stretch actually mean for the build?
The rear axle physically moves 5 inches rearward from its factory location. This creates more room for longer rear control arms — reducing suspension angles and increasing rear axle travel beyond what a standard-length long arm kit can achieve. However, moving the rear axle 5" rearward also means the rear driveshaft is 5" shorter than needed and must be extended or replaced, the rear wheel wells and fenders are now in different positions relative to the tires and must be modified, and the body fitment at the rear changes. This is a comprehensive build modification that touches suspension, driveline, exhaust, and body simultaneously.
Why does moving the rear axle require a front CV driveshaft with SYE kit?
The rear axle repositioning is part of a complete suspension geometry change that also affects the front driveline. The long arm geometry at this level of build changes the front driveshaft operating angle beyond what a standard U-joint front driveshaft can accommodate. A CV-style front driveshaft with Slip Yoke Eliminator kit is required for correct front driveline operation.
Does this kit fit both the TJ (2-door) and LJ Unlimited (4-door)?
Yes — the weld-on rear frame brackets and control arm geometry cover both the TJ (1997–2006) and the LJ Unlimited (2004–2006). The TJ and LJ share the same rear frame architecture in the relevant areas. Confirm your specific year and model before ordering. Text (469) 407-7538 if you have any doubt whether your Wrangler is a TJ or LJ.
What rear driveshaft do I need?
The 5" rear stretch requires a rear driveshaft that is 5" longer than the factory unit to bridge the increased distance between the transfer case and the repositioned rear axle. A custom-length rear driveshaft is required — source from a driveshaft fabrication shop with your vehicle's existing driveshaft specifications and the new axle position as reference dimensions.
What about fender and body clearance?
With the rear axle moved 5" rearward, the tires are now positioned further back relative to the factory fenders and rear body panels. Depending on tire size and wheel offset, the tires may extend beyond the factory fender line at full droop or at full compression travel. Fender modifications — cutting, flaring, or panel relocation — are required to clear the repositioned axle and tires through full suspension travel.
What is the warranty on the control arms?
Clayton Off Road provides a lifetime warranty on all control arms in this kit. Confirm full terms at claytonoffroad.com/pages/warranty-policy.
The Obsidian Take
This kit is for the TJ or LJ Unlimited owner who is building a dedicated long-travel rear suspension and wants the maximum rear axle travel that an extended wheelbase can deliver. The 5" rear stretch is not a suspension upgrade in the conventional sense — it is a build commitment that touches suspension, driveline, exhaust, and body simultaneously. The Currie Johnny Joints, GIIRO bushings, double-adjustable arms, and included 4-link axle truss are the suspension hardware. The stretch, the custom exhaust, the extended rear driveshaft, the body mods, and the front CV driveshaft with SYE kit are the build consequences.
This kit is not for a buyer who is thinking about a stretch build. It is for a buyer who has already decided on a stretch build, has a fabricator lined up, has a driveshaft shop identified, and has a plan for the body work. In that build, COR-4805302 is the rear suspension hardware. Everything else is build planning.
It is not for the JK or JL. It is not a bolt-on kit. It is not a suspension upgrade that can be done without affecting the rest of the truck. The 53 lb shipping weight and five separate categories of build requirements confirm that before any other question does.
Manufacturer Data Disclaimer
Product specifications and fitment data are sourced from Clayton Off Road product documentation and authorized product information. Actual product dimensions, fitment details, stretch measurement, and build requirements may vary by specific vehicle configuration, lift height, and manufacturer updates. Confirm all build requirements with Clayton or OFAS before ordering.
Non-Returnable Notice
Suspension components are non-returnable once installed. This kit requires permanent welding to the TJ/LJ frame and physically repositions the rear axle 5 inches rearward — a permanent, irreversible build modification. Confirm vehicle identity (1997–2006 TJ or 2004–2006 LJ Unlimited), access to a certified welder, sourced front CV driveshaft with SYE kit, custom exhaust plan, rear driveshaft extension plan, and body modification plan before ordering. Text (469) 407-7538 with any fitment or build questions before your order is placed.