SuperPro Upper Trailing Arm Adjustable Kit

2010–2023 Toyota 4Runner / 2010–2014 Toyota FJ Cruiser / 2003–2024 Lexus GX460

Part #: TRC498

Overview

The SuperPro Upper Trailing Arm Adjustable Kit is designed to enhance the handling, stability, and off-road capability of your Toyota 4Runner, FJ Cruiser, or Lexus GX460. Whether you're a daily driver, an off-road enthusiast, or a performance-minded builder, this kit provides the adjustability and durability needed to optimize your vehicle's suspension geometry. By upgrading your upper trailing arms, you'll experience improved wheel alignment, better cornering response, and increased suspension articulation, all while maintaining a smooth and controlled ride.

Constructed with high-quality materials and engineered for precise fitment, this adjustable kit is ideal for those looking to correct factory suspension angles after lift modifications or to fine-tune their vehicle's handling characteristics. The SuperPro kit is a reliable upgrade that supports your vehicle's performance goals, whether on rugged trails or paved roads.

Key Features

The SuperPro Upper Trailing Arm Adjustable Kit incorporates advanced design features to deliver superior performance and longevity. Key features include:

• Heavy-duty, corrosion-resistant aluminum and steel components designed to withstand harsh off-road conditions and daily driving stresses.
• Adjustable length arms with precision-threaded components allow for fine-tuning of wheel alignment angles, including camber and caster, ensuring optimal tire contact and handling.
• SuperPro's proprietary polyurethane bushings provide excellent durability, reduced deflection, and consistent performance over time, compared to rubber bushings.
• Engineered with CAD software and tested through rigorous simulation to ensure perfect fitment and reliable operation.
• Designed specifically for the 10-14 Toyota FJ Cruiser, 2010-2023 Toyota 4Runner, and 2003-2024 Lexus GX460, accommodating various submodels and trims.
• Supports vehicle lift modifications, helping to restore factory suspension geometry or achieve desired ride height adjustments.
• Enhances off-road articulation and stability, making it an excellent choice for trail driving, overlanding, or aggressive street use.
• Backed by SuperPro's reputation for quality and performance, ensuring long-lasting durability and consistent handling improvements.

Construction & Design

The SuperPro Upper Trailing Arm Adjustable Kit features a robust construction utilizing high-strength aluminum for the arms, combined with precision-machined steel components for critical load-bearing points. The polyurethane bushings are engineered for maximum durability, resisting wear and environmental degradation. The adjustable arms incorporate finely threaded rods and locknuts, allowing for precise length adjustments without compromising strength or stability. This thoughtful design ensures that your suspension maintains proper alignment and handling characteristics, even after extensive off-road use or suspension lifts.

The components are TIG-welded and CAD-designed to ensure perfect fitment and seamless integration with your vehicle's existing suspension system. The kit's corrosion-resistant finishes extend its lifespan, making it suitable for challenging off-road environments and harsh weather conditions.

Installation & Fitment

The SuperPro Upper Trailing Arm Adjustable Kit is designed as a bolt-on upgrade that requires no cutting or welding. Installation involves removing the factory upper trailing arms and replacing them with the adjustable units using standard hand tools. Proper alignment is recommended after installation to ensure optimal handling and tire wear. The process typically takes a few hours and can be performed by a qualified mechanic or experienced DIY enthusiast.

No additional modifications or tuning are generally required, making this a straightforward upgrade for those seeking to improve their vehicle's suspension performance and adjustability.

What's Included

• Left and right adjustable upper trailing arms
• Polyurethane bushings pre-installed
• All necessary mounting hardware and locknuts
• Installation instructions

Ideal For

This kit is perfect for off-road enthusiasts, overlanders, and performance drivers who want to optimize their vehicle's suspension geometry. It is especially beneficial for those running lift kits or seeking to correct factory alignment issues after suspension modifications. Whether you're tackling rugged trails or seeking improved on-road handling, the SuperPro Upper Trailing Arm Adjustable Kit provides the durability and adjustability needed to meet your driving demands.