Fabtech 4" Basic System with Stealth Shocks

2011–2019 GM 2500HD 2WD/4WD

Part #: K1121M

Overview

The Fabtech 4" Basic System with Stealth Shocks is a comprehensive suspension upgrade designed specifically for your GM 2500HD pickup truck from 2011 to 2019. Engineered to enhance both the appearance and performance of your vehicle, this system provides a reliable and durable solution for those seeking a moderate lift with improved off-road capability and a commanding stance.

Ideal for enthusiasts who enjoy spirited driving, off-road adventures, or simply want a more aggressive look, this lift kit combines heavy-duty construction with proven design features. The system maintains a near stock track width, ensuring your tires stay within the fenders for a clean, OEM-like appearance while gaining additional ground clearance and improved wheel articulation.

Key Features

The Fabtech 4" Basic System with Stealth Shocks offers a range of innovative features that deliver both performance and reliability:

• Heavy-duty construction utilizing 1/4-inch thick steel for the high arched lower control arm crossmembers, providing maximum strength and durability for demanding off-road conditions.
• Stealth shocks designed for a smooth ride and enhanced handling, combining performance with a sleek, low-profile appearance that minimizes visual clutter in the engine bay.
• Retains the factory track width, ensuring proper alignment and tire fitment, which helps maintain the vehicle’s original handling characteristics and reduces uneven tire wear.
• Rear lift is achieved with a simple block and u-bolt configuration, offering a straightforward installation process and reliable support for increased ride height.
• Designed with heavy-duty components that withstand the rigors of off-road driving while providing a comfortable on-road experience.

Construction & Design

The system features high arched lower control arm crossmembers constructed from 1/4-inch steel, ensuring maximum strength and longevity. The use of ductile iron steering knuckles helps retain the factory track width, preserving your vehicle’s original handling dynamics and appearance. The components are engineered with precision, utilizing CAD-designed parts and TIG welding for superior fitment and durability.

The inclusion of Stealth shocks not only enhances ride quality but also reduces unsprung weight, improving overall suspension response. The rear lift setup with blocks and u-bolts offers a simple yet effective method to elevate the vehicle, making it suitable for off-road use and aesthetic upgrades alike.

Performance & Sound

This lift system improves ground clearance and wheel travel, allowing your GM 2500HD to handle rough terrain with confidence. While specific horsepower or torque gains are not provided, the upgraded suspension helps support increased load capacity and off-road performance. The system is designed to deliver a stable, controlled ride with minimal noise and vibration, thanks to high-quality components and precise engineering.

Installation & Fitment

The Fabtech 4" Basic System is a bolt-on installation that requires no cutting or drilling. It mounts directly to existing factory points, making it accessible for experienced DIY enthusiasts or professional installers. The process typically involves replacing factory components with the new lift parts, and no special tuning is necessary for proper operation. The system is designed to maintain factory ride quality while providing a noticeable lift and improved off-road capability.

• Easy bolt-on installation with standard tools
• No cutting, drilling, or complex modifications required
• Compatible with 2WD and 4WD models of the GM 2500HD from 2011 to 2019

What's Included

• High arched lower control arm crossmembers
• Stealth shocks
• Rear lift blocks and u-bolts
• All necessary mounting hardware and instructions

Ideal For

This suspension lift system is perfect for GM 2500HD owners looking to enhance their truck's off-road performance, improve ground clearance, or achieve a more aggressive stance. Whether you're tackling rough trails, hauling heavy loads, or simply want a bold look, this kit provides a reliable and straightforward upgrade.