ICON Vehicle Dynamics Billet Upper Control Arm with Delta Joint for Toyota FJ Cruiser, 4Runner and Lexus GX

The ICON Vehicle Dynamics Billet Upper Control Arm with Delta Joint Kit is a CNC-machined 6061 aluminum replacement upper control arm for the 2007–2014 Toyota FJ Cruiser, 2003–2024 Toyota 4Runner, and 2003–2023 Lexus GX, compatible with 0–3.5 inches of front lift over stock. It replaces the factory upper control arm and is engineered to restore and refine caster and camber geometry after a lift is installed.

Shipping: ICON parts ship direct from ICON Vehicle Dynamics, mostly by UPS Ground. Lead times vary by part and some items are built to order, so please allow extra time. We email tracking as soon as your order ships.

Precision Alignment Where It Counts

PTFE-lined 3/4 inch FK rod ends and machined adjuster sleeves allow caster and camber to be set on the vehicle without removing the arm. For a lifted truck or SUV, that means a proper alignment is achievable without the compromises that come from forcing a factory arm into a geometry it was never designed for. Dialing in caster also directly affects steering returnability and straight-line stability on highway miles between trail runs.

The Delta Joint: Durability Without the Uniball Trade-Off

ICON's patented Delta Joint is a high-angle ball joint designed to match the articulation range of a uniball while adding the weather protection a uniball cannot offer. A zinc-plated housing and a tough grease seal keep contaminants away from the joint's working surfaces. The metal-on-metal, greaseable construction extends service life, and an O-ring-sealed cover cap adds a second layer of element protection. The result is a joint that articulates freely under full droop without the corrosion-driven noise and wear that shortens the life of an exposed uniball on a daily-driven vehicle.

Matte Anodized Aluminum Built to Last

The arm body is machined from 6061 billet aluminum and finished in a matte anodization process. Anodizing integrates the corrosion barrier into the aluminum surface rather than sitting on top of it, so it does not chip or peel when the arm contacts brush, rocks, or road debris. The billet construction removes the casting porosity and inconsistency that can affect stamped or cast arms under repeated high-stress cycles.

Features

• Patented Delta Joint: high-angle, greaseable, zinc-plated housing with grease seal and O-ring-sealed cover cap
• CNC-machined 6061 billet aluminum: matte anodized finish for corrosion resistance
• PTFE-lined 3/4 in FK rod ends: smooth articulation with reduced bind
• Machined adjuster sleeves: on-vehicle caster and camber adjustment without arm removal
• Lift compatibility: designed for 0–3.5 inches of front lift over stock

Specifications

Who This Is For and Isn't

This upper control arm kit suits owners of a 2007–2014 Toyota FJ Cruiser, 2003–2024 Toyota 4Runner, or 2003–2023 Lexus GX running between 0 and 3.5 inches of front lift over stock who want to restore correct caster and camber geometry and gain a more durable, serviceable front joint than a standard uniball setup provides.

This kit does not fit vehicles outside the stated model years and makes, and it is not compatible with front lift heights above 3.5 inches over stock. It is a single upper control arm kit; lower control arms, coilovers, and alignment tools are sold separately. A needle grease gun adapter and spanner pin wrench are available as add-ons but are not included.

Common Questions

What vehicles does this upper control arm fit?

The ICON Billet Upper Control Arm with Delta Joint Kit (SKU 58551DJ) fits the 2007–2014 Toyota FJ Cruiser, 2003–2024 Toyota 4Runner, and 2003–2023 Lexus GX. It is designed for use with 0 to 3.5 inches of front lift over stock and is not confirmed for other makes, models, or lift heights outside that range.

What is the Delta Joint and why does it matter?

The Delta Joint is ICON's patented high-angle ball joint. It is designed to articulate at the high angles a uniball allows while adding a zinc-plated housing, a grease seal, and an O-ring-sealed cover cap that protect the joint from water, mud, and debris. The greaseable, metal-on-metal design extends service life compared to an exposed uniball on a vehicle driven in wet or dirty conditions regularly.

Can caster and camber be adjusted without removing the arm?

Yes. The ICON Billet Upper Control Arm includes machined adjuster sleeves and PTFE-lined rod ends that allow caster and camber to be set while the arm remains on the vehicle, making alignment adjustments faster and more accessible than designs that require full arm removal for each adjustment.

What tools or accessories are needed for installation?

An installation guide is available from ICON. The ICON 0.25 inch Collar Spanner Pin Wrench and the ICON Needle Grease Gun Adapter Kit are compatible accessories sold separately and are not included with this upper control arm kit. A professional alignment is recommended after installation.

Does this kit include lower control arms or coilovers?

No. The ICON Billet Upper Control Arm with Delta Joint Kit includes the upper control arm assembly only. Lower control arms, coilovers, and other suspension components are sold separately. ICON notes that pairing these upper control arms with ICON extended-travel coilovers can increase available wheel travel.

California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth anomalies, or other reproductive harm.