Clayton Off Road Front Long Arm Upgrade Kit | No Welding Required | Currie Johnny Joints | GIIRO Bushings | Adjustable Upper and Lower Arms | 4"–8" Lift | 2004–2006 Jeep Wrangler LJ Unlimited | SKU: COR-4807002
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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 2004 through 2006 Jeep Wrangler LJ Unlimited only — the 4-door, long-wheelbase TJ-era platform — at 4" to 8" of front lift. It is a complete front-half long arm upgrade kit requiring no welding. Buyers who want the 3-link front Pro Series upgrade should see COR-4807013. Buyers who want a matching rear long arm upgrade should see COR-4807003.
| Year Range | Make | Model | Configuration | Lift Range | Installation |
|---|---|---|---|---|---|
| 2004–2006 | Jeep | Wrangler LJ Unlimited | 4-Door | 4"–8" | No welding required |
Before ordering — confirm three items:
- Vehicle is a 2004–2006 LJ Unlimited — not a TJ 2-door, not a JK, not a JL
- Lift height is 4" or greater — this kit is not recommended for lifts below 4"
- If a front 3-link geometry upgrade is planned simultaneously, source COR-4807013 alongside this kit
Verify fitment by text: (469) 407-7538
Does NOT Fit
| Exclusion | Reason | Notes |
|---|---|---|
| Jeep Wrangler TJ (1997–2006, 2-Door) | LJ Unlimited only — different front frame dimensions and wheelbase | Not applicable |
| Jeep Wrangler JK (2007–2018) | Different front suspension architecture | See JK front long arm systems |
| Jeep Wrangler JL (2018–2026) | Different front suspension architecture | Not applicable |
| Jeep Gladiator JT | Different front suspension architecture | Not applicable |
| LJ builds running less than 4" of front lift | Below 4", short arm front geometry can function adequately — long arm conversion below this height may not produce meaningful benefit | Confirm lift height is 4" or greater before ordering |
| LJ builds running more than 8" of front lift | Above 8", additional geometry considerations may apply — verify with Clayton before ordering | Text (469) 407-7538 |
Verify fitment by text: (469) 407-7538
Component Specifications
| Specification | Detail |
|---|---|
| Part number | COR-4807002 |
| Application | Front long arm upgrade kit — front-half system, LJ Unlimited 2004–2006 |
| Lift range | 4"–8" |
| Frame brackets | Front frame brackets — bolt-on to factory front control arm frame mount locations |
| Control arms | Upper and lower adjustable — precise geometry tuning for caster and arm length |
| 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 | Not included — front kit does not include an axle truss. If front axle tube reinforcement is needed, source separately. |
| Installation | No welding required — complete bolt-on installation |
| Pro Series 3-link upgrade path | COR-4807013 — adds weld-on 3-link upper arm and mounts for maximum articulation; can be installed simultaneously with or after this kit |
| Warranty | Lifetime — all control arms |
| Unit weight | 7 lb |
| Shipping dimensions | 8" × 6" × 4" |
What Is and Is NOT Included
Included:
| Component |
|---|
| Front frame brackets |
| Upper adjustable control arms (pair) with Currie Johnny Joint frame ends and GIIRO axle-end bushings |
| Lower adjustable control arms (pair) with Currie Johnny Joint frame ends and GIIRO axle-end bushings |
| Hardware per Clayton specification |
Not Included:
| Item | Notes |
|---|---|
| Front axle truss | Not included with this kit — unlike the rear long arm kit (COR-4807003), no axle truss is included for the front. If front axle tube reinforcement is required for your build, source separately. |
| COR-4807013 3-link upper arm conversion | If upgrading to 3-link front geometry simultaneously or later, COR-4807013 adds the weld-on 3-link upper arm and mounts. Sold separately. |
| Front CV-style driveshaft | Not required for this standard 4-link long arm conversion — unlike the 3-link systems. Verify front driveshaft operating angles after installation. |
| Professional installation labor | Qualified shop with LJ long arm experience recommended. Not included. |
Critical Compatibility
| Condition | Interaction | Action Required |
|---|---|---|
| Front driveshaft operating angles | The longer front arm geometry changes caster angle at lift height. A changed caster angle can affect front driveshaft U-joint operating angles. Verify front driveshaft angles after installation — in most configurations the adjustable arms allow caster correction within acceptable driveshaft operating angles, but confirm after installation. | Check front driveshaft angle after setting caster geometry. Correct if operating angles are outside acceptable range. |
| Front alignment — mandatory post-install | A long arm front conversion changes caster, camber, and toe simultaneously. A full front-end alignment is mandatory before highway driving after installation. | Schedule alignment immediately after installation. Do not drive at highway speed before alignment is confirmed. |
| COR-4807002 vs. COR-4807013 — upgrade path | COR-4807013 is the Pro Series front 3-link complete kit — it includes the frame brackets, 3-link upper mount, lower arms, and 3-link upper arm, with weld-on mounts required. COR-4807002 (this kit) provides the 4-link long arm geometry without welding. A buyer who purchases COR-4807002 and later wants to convert to 3-link can add the COR-4807015 conversion add-on (upper arm + mounts only) — COR-4807013 would duplicate the lower arms and brackets already installed. | If 3-link is the eventual goal, consider ordering COR-4807013 directly rather than COR-4807002 followed by COR-4807015. Text (469) 407-7538 to confirm the optimal build sequence. |
| Lift height minimum — 4" | Below 4" of front lift, factory short arm front geometry is within acceptable operating range. Long arm conversion below 4" adds cost and complexity without meaningful improvement. | Confirm front lift height is 4" or greater before ordering. |
| LJ vs. TJ front frame dimensions | The LJ Unlimited's longer wheelbase produces different front frame geometry than the TJ 2-door. The frame brackets in this kit are LJ-specific — do not attempt to install on a TJ. | Confirm vehicle is 2004–2006 LJ Unlimited before ordering. |
Installation Notes
Skill level: Intermediate to advanced. No welding required — this is a bolt-on front long arm replacement. A qualified shop with LJ front suspension experience is recommended for correct geometry setting and mandatory post-install alignment.
Step 1 — Frame bracket installation:
- Install the front frame brackets in the factory front control arm frame mount locations per Clayton's installation instructions.
Step 2 — Control arm installation:
- Install the upper and lower adjustable control arms at initial length per Clayton's geometry specifications for your lift height.
Step 3 — Geometry setting:
- Set caster and pinion angle with the vehicle at static ride height.
- Torque all control arm hardware at ride height — not at full droop or full compression.
Step 4 — Driveshaft and alignment:
- Verify front driveshaft U-joint operating angles — the longer arm geometry changes caster angle, which may affect driveshaft angles.
- Complete a full front alignment — caster, camber, and toe — before highway driving.
Optional upgrade — 3-link front geometry:
If converting to 3-link front geometry simultaneously with this installation, install COR-4807013 components before final alignment. Do not set final alignment until all planned front suspension components are installed.
Required tools (qualified shop):
| Tool | Required |
|---|---|
| Vehicle lift rated for LJ | Yes |
| Torque wrench | Yes |
| Full socket and wrench set | Yes |
| Geometry setting and measurement equipment | Yes |
| Alignment equipment or appointment | Yes |
Common Questions
What is the difference between this and COR-4807013 (Pro Series front 3-link)?
Geometry type, installation complexity, and upgrade scope. COR-4807013 is the complete front-half Pro Series 3-link kit — it includes weld-on frame brackets, a weld-on 3-link upper mount, double-adjustable lower arms, and a 3-link upper arm. It requires welding, a custom exhaust, a front CV driveshaft with SYE kit, and a D30 front truss. COR-4807002 (this kit) is the 4-link long arm system — bolt-on, no welding, no exhaust modification, no CV driveshaft requirement. If you want maximum front articulation via 3-link geometry and have fabrication capability, COR-4807013 is the correct choice. If you want a significant improvement in front ride quality and articulation over short arm geometry without fabrication requirements, COR-4807002 is correct.
If I start with this kit and later want to add 3-link front geometry, what do I order?
COR-4807015 — the front 3-link conversion add-on. It adds the weld-on upper arm mount brackets and single upper 3-link arm to an existing long arm system, converting the front from 4-link to 3-link geometry. Do not order COR-4807013 after installing this kit — COR-4807013 includes lower arms and frame brackets you already have, which would be redundant. Text (469) 407-7538 to confirm the correct upgrade sequence for your specific build.
Why is there no axle truss in the front kit when the rear kit (COR-4807003) includes one?
The rear kit includes a 4-link rear axle truss because the rear axle tube is reinforced at the control arm mount locations to handle the long arm load inputs. The front kit's source documentation does not include an axle truss — if you are concerned about front axle tube reinforcement at the control arm mount locations for your specific application, source a front axle truss separately. For Dana 30 front axles, a D30 front truss is available.
Does this require a front CV driveshaft?
No — unlike the Pro Series 3-link front kits (COR-4807013, COR-4807015), this standard 4-link long arm kit does not require a front CV driveshaft. Verify front driveshaft U-joint operating angles after installation as a standard post-install check, but a CV conversion is not required for this kit.
What is the warranty on the control arms?
Clayton Off Road provides a lifetime warranty on all control arms in this kit — both upper and lower. Confirm full terms at claytonoffroad.com/pages/warranty-policy.
The Obsidian Take
This kit is for the 2004–2006 LJ Unlimited owner running 4" to 8" of front lift who wants to replace the short arm front geometry with long arm geometry without requiring a certified welder, a custom exhaust, or a CV driveshaft conversion. The Currie Johnny Joints, GIIRO bushings, and adjustable upper and lower arms provide the geometry correction and joint quality of the Pro Series lineup in a bolt-on format.
The comparison to COR-4807013 is the key buyer decision. COR-4807013 delivers 3-link front geometry and maximum front articulation at the cost of fabrication, custom exhaust, and CV driveshaft requirements. COR-4807002 delivers meaningful long arm front geometry improvement — better ride quality, more articulation than short arm — without any of those requirements. For a trail-capable LJ that still needs to function as a daily driver, COR-4807002 is the front half of that build. COR-4807003 is the rear half.
The upgrade path to 3-link is available later through COR-4807015 — not COR-4807013 — without duplicating hardware already installed by this kit. That sequence makes COR-4807002 the correct starting point for any LJ owner who wants long arm front geometry now and may want 3-link geometry later.
It is not for the TJ 2-door, JK, or JL. It is not for lifts below 4". And it is not a complete front and rear long arm solution — pair it with COR-4807003 for the matching rear kit.
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, and geometry specifications 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. Confirm vehicle identity (2004–2006 LJ Unlimited only — not TJ 2-door, JK, or JL), lift height (4"–8"), and build goals (if 3-link front geometry is planned, see COR-4807013 or COR-4807015 before ordering). Text (469) 407-7538 with any fitment or build questions before your order is placed.