Fabtech GM K2500HD 4WD 3.5in Uniball Upper Control Arm Kit

2020–2025 Chevrolet Silverado 2500HD / GMC Sierra 2500HD 4WD 3.5-inch Lift

Part #: FTS21275

Overview

The Fabtech 3.5-inch Uniball Upper Control Arm Kit is designed to enhance the off-road capability and handling of your GM K2500HD 4WD pickup. Built for enthusiasts who demand durability and performance, this kit replaces the factory upper control arms with heavy-duty, high-performance components that support a 3.5-inch lift height. Whether you're tackling rugged trails, hauling heavy loads, or seeking improved ride quality, this control arm kit provides a significant upgrade over stock suspension parts.

Constructed with precision and engineered for a perfect fit, this kit helps support increased wheel travel, better alignment angles, and improved overall suspension geometry. You'll experience more confident off-road performance, enhanced steering response, and a more aggressive stance—all while maintaining factory-like reliability and durability.

Key Features

The Fabtech GM K2500HD Uniball Upper Control Arm Kit incorporates advanced materials and design features to deliver superior performance and longevity:

• Heavy-duty, tubular steel construction with a durable black powder coat finish resists corrosion and wear, ensuring long-lasting performance in demanding conditions.
• Uniball joints replace factory ball joints, providing increased articulation, reduced binding, and improved wheel travel for off-road adventures.
• Precision-engineered for a direct bolt-on installation, these control arms are designed to retain proper suspension geometry and alignment settings.
• Supports a 3.5-inch lift, allowing for larger tires and a more commanding vehicle stance without sacrificing ride quality or handling.
• Optimized for off-road use, these control arms help improve clearance, reduce suspension bind, and enhance overall vehicle stability.
• Made in the United States, ensuring quality craftsmanship and adherence to strict manufacturing standards.
• Includes all necessary hardware and mounting components for a straightforward installation process.

Construction & Design

The Fabtech control arms are crafted from high-strength tubular steel, providing a robust foundation capable of withstanding the rigors of off-road driving. The use of uniball joints instead of traditional ball joints allows for greater articulation and durability, especially in rough terrain. The components are TIG-welded for precision and strength, and finished with a corrosion-resistant powder coating to withstand the elements. Designed with factory-like fitment, these control arms maintain proper suspension geometry, ensuring safe and predictable handling both on and off the pavement.

Performance & Sound

With the installation of these control arms, you will notice improved wheel articulation, better handling, and a more aggressive stance. The uniball joints provide smoother movement and increased durability compared to stock ball joints, especially under off-road conditions. While the kit does not specifically claim horsepower or torque gains, it significantly enhances suspension performance, allowing your vehicle to handle more challenging terrains with confidence. The upgrade also contributes to a more responsive steering feel and improved ride quality, making your driving experience more enjoyable and controlled.

Installation & Fitment

The Fabtech GM K2500HD Uniball Upper Control Arm Kit is designed for a bolt-on installation, with no cutting, drilling, or major modifications required. It is recommended to have a professional alignment after installation to ensure optimal handling and tire wear. The process typically involves removing the factory upper control arms and replacing them with the new uniball units, which can be completed with standard hand tools and basic suspension knowledge. The kit is compatible with 2020 and newer GM K2500HD 4WD models equipped with a 3.5-inch lift, providing a reliable upgrade for lifted trucks.

• Direct bolt-on replacement for factory upper control arms
• No cutting, drilling, or tuning required
• Requires professional alignment for optimal performance

What's Included

• Two heavy-duty tubular steel upper control arms with uniball joints
• All necessary mounting hardware and hardware
• Installation instructions and technical support

Ideal For

• Off-road enthusiasts seeking increased wheel travel and articulation
• Heavy-duty truck owners who require durable suspension upgrades
• Lifted GM K2500HD trucks aiming for improved handling and stance
• Drivers wanting a reliable, long-lasting suspension component made in the USA

Emissions Note

This product is designed for off-road use and may not be CARB-compliant. Please check local regulations before installation if emissions compliance is required for on-road use.