Fabtech 4" Basic System with Performance Shocks

2011–2019 GM 2500HD 2WD/4WD

Part #: K1121

Overview

The Fabtech 4" Basic System with Performance Shocks is a comprehensive suspension upgrade designed specifically for GM 2500HD trucks from 2011 to 2019. Built to enhance both the appearance and performance of your vehicle, this system provides a reliable lift that maintains factory-like handling and drivability. Whether you're looking to improve off-road capability, increase ground clearance, or achieve a more aggressive stance, this kit offers a robust solution for truck enthusiasts and daily drivers alike.

Engineered with heavy-duty construction and precision design, the Fabtech 4" lift system ensures your GM 2500HD can handle demanding conditions while maintaining a smooth ride. The inclusion of performance shocks further enhances stability and control, making this upgrade suitable for spirited driving, off-road adventures, or simply elevating your truck's aesthetic appeal.

Key Features

The Fabtech 4" Basic System stands out with its durable construction and thoughtful design features that prioritize strength, safety, and longevity. Key attributes include:

• Heavy-duty 1/4-inch thick steel crossmember construction for maximum strength and durability, ensuring your suspension can withstand tough off-road conditions and heavy loads.
• High arched lower control arm crossmembers designed to provide increased ground clearance while maintaining proper suspension geometry.
• Retains near stock track width thanks to ductile iron steering knuckles, preserving your vehicle's factory handling characteristics and preventing excessive tire wear.
• Rear lift achieved through a reliable block and U-bolt configuration, providing a straightforward and secure method to lift the rear of your truck.
• Heavy-duty components engineered for long-lasting performance and minimal maintenance, ensuring your suspension remains reliable over time.
• Designed for easy bolt-on installation with minimal modifications required, allowing you to upgrade your suspension without extensive downtime.
• Compatible with both 2WD and 4WD models, offering versatility for various driving needs and preferences.

Construction & Design

The Fabtech 4" Basic System features a heavy-duty steel construction that emphasizes strength and durability. The main crossmembers are fabricated from 1/4-inch thick steel, providing a robust foundation capable of supporting off-road impacts and heavy loads. The high arched design of the lower control arm crossmembers not only enhances ground clearance but also maintains proper suspension geometry for optimal handling.

The ductile iron steering knuckles are engineered to retain the factory track width, ensuring your vehicle maintains its original handling characteristics and tire wear patterns. The rear lift is achieved with a simple block and U-bolt setup, which is a proven method for reliable rear elevation. All components are precision-machined and TIG-welded where applicable, ensuring a precise fit and long-lasting performance. The system is designed to integrate seamlessly with your existing suspension components, providing a clean, factory-like appearance and reliable operation.

Performance & Sound

This suspension system is designed to improve your truck's off-road capability and overall stance without sacrificing ride quality. The increased ground clearance allows for larger tires and better approach/departure angles, making off-road adventures more accessible. The performance shocks included are engineered to provide improved damping, resulting in a smoother ride and enhanced stability during spirited driving or challenging terrain. While specific horsepower or torque gains are not claimed, the system supports your vehicle's ability to handle increased loads and off-road conditions with confidence.

Installation & Fitment

The Fabtech 4" Basic System is a bolt-on upgrade that requires minimal modifications. The kit is designed for straightforward installation using factory mounting points and hardware, making it accessible for experienced DIY enthusiasts and professional installers alike. No cutting, drilling, or extensive tuning is necessary, allowing you to enjoy your lifted truck quickly and efficiently. Proper alignment is recommended after installation to ensure optimal handling and tire wear.

• Easy bolt-on installation with detailed instructions included
• Compatible with 2011–2019 GM 2500HD 2WD/4WD models
• No cutting or drilling required for most applications

What's Included

• Heavy-duty front crossmembers and control arms
• High arched lower control arm crossmembers
• Steering knuckles
• Rear blocks and U-bolts
• Performance shocks
• All necessary hardware and mounting components
• Installation instructions

Ideal For

• Truck owners seeking a reliable 4-inch lift for off-road adventures
• Enthusiasts wanting to improve ground clearance and stance
• Daily drivers looking for a durable suspension upgrade
• Those who want to maintain factory handling and ride quality