Fabtech Ultimate System

2011–2019 GM C/K2500HD / 3500HD 4-Inch Lift Kit with Stealth Shocks

Part #: K1055M

Overview

The Fabtech 3.5-inch Ultimate System with Stealth Shocks is designed to enhance the off-road capability and appearance of your GM C/K2500HD or 3500HD pickup truck from 2011 to 2019. This comprehensive lift kit provides a balanced combination of performance, durability, and ride quality, making it an excellent choice for enthusiasts who want to tackle challenging terrains while maintaining a comfortable street driving experience.

Built with high-quality components, this system allows you to install larger tires—up to 33 or 35 inches tall—without extensive modifications. Whether you're upgrading for off-road adventures, improved ground clearance, or a more aggressive stance, this kit delivers reliable performance and a commanding look for your truck.

Key Features

The Fabtech Ultimate System incorporates innovative engineering and premium materials to ensure durability and optimal performance. Key features include:

• Utilizes replacement upper control arms constructed from 1.50-inch OD, .120-inch thick wall DOM tubing, providing increased strength and durability for off-road use.
• Heavy-duty Fabtech ductile iron steering knuckles enhance steering precision and robustness, supporting larger tires and aggressive driving conditions.
• The system maintains the factory torsion bars in their original position, preserving factory ride quality while providing the desired lift height.
• Forged adjusting keys are included to fine-tune the lift and ensure proper alignment, contributing to improved handling and tire wear.
• Designed for street and off-road use, offering a versatile solution for daily driving and rugged adventures.
• Stealth shocks provide a smooth ride and excellent damping performance, reducing body roll and improving stability over rough terrain.
• Engineered with precision CAD development and TIG welding for superior fitment and longevity.

Construction & Design

The Fabtech Ultimate System features a meticulously designed suspension architecture utilizing high-strength DOM tubing for the control arms, which ensures durability under demanding off-road conditions. The heavy-duty ductile iron steering knuckles are crafted to withstand impacts and provide precise steering response. The system's components are finished with corrosion-resistant coatings, extending the lifespan of your suspension even in harsh environments. The use of factory-style mounting points and minimal modifications ensures a straightforward installation process, making it accessible for experienced DIY enthusiasts and professional installers alike.

Performance & Sound

This lift kit significantly improves ground clearance and off-road capability, allowing you to confidently navigate challenging trails and obstacles. The upgraded suspension components help support larger tires, which enhance traction and overall vehicle stability. The Stealth shocks deliver a comfortable ride with controlled damping, reducing harshness and body roll during spirited driving or off-road excursions. While specific horsepower or torque gains are not claimed, the system helps support increased load capacity and improved handling characteristics, making your truck more capable and enjoyable to drive.

Installation & Fitment

The Fabtech Ultimate System is designed as a bolt-on upgrade that requires no cutting or drilling in most cases. The installation involves replacing factory control arms with the heavy-duty upgraded versions, attaching the new control arms to the existing mounting points, and installing the Stealth shocks. Proper alignment is recommended after installation to ensure optimal handling and tire wear. The system is suitable for use on 2011–2019 GM C/K2500HD and 3500HD trucks, providing a reliable lift solution that maintains factory ride quality and steering response.

• No cutting, drilling, or extensive modifications required in most applications.
• Includes all necessary hardware and components for a complete installation.

What's Included

• Replacement upper control arms with DOM tubing construction
• Heavy-duty ductile iron steering knuckles
• Stealth shocks for improved damping and ride quality
• Forged adjusting keys for fine-tuning lift height
• All necessary hardware and mounting components
• Installation instructions

Ideal For

This lift kit is perfect for off-road enthusiasts, truck owners seeking a more aggressive stance, and those looking to upgrade their GM C/K2500HD or 3500HD for improved ground clearance and tire size flexibility. It offers a balanced blend of performance, durability, and ease of installation, making it suitable for daily drivers and weekend warriors alike.

Emissions Note

This product is designed for off-road use and may not be legal for street use in all areas. Please check local regulations regarding emissions compliance and vehicle modifications before installation.