Fabtech Ultimate Suspension System

2011–2019 GM C/K2500HD / 3500HD 6-Lug 4WD / 4X4 with 3.5-inch Lift

Part #: K1056DL

Overview

The Fabtech 3.5-inch Ultimate Suspension System with DL Shocks is designed to enhance the off-road capability and street performance of your GM C/K2500HD or 3500HD pickup. Engineered for enthusiasts who want a balanced combination of increased ground clearance, improved handling, and the ability to run larger tires, this system provides a reliable upgrade over stock suspension components. Whether you're tackling rugged trails or enjoying spirited driving on paved roads, this suspension system offers the versatility and durability you need.

Built with quality and precision, the Ultimate System maintains factory ride quality while delivering a lift that supports 33-inch or 35-inch tires with minimal modifications. The system is ideal for those seeking a moderate lift height that enhances off-road clearance without sacrificing daily drivability or comfort.

Key Features

This suspension upgrade features heavy-duty components designed for durability and performance. The system utilizes replacement upper control arms constructed from 1.50-inch OD .120-inch thick wall DOM tubing, ensuring strength and longevity under demanding conditions. These control arms attach to heavy-duty Fabtech ductile iron steering knuckles, providing precise steering response and improved durability.

• Heavy-duty upper control arms with DOM tubing for increased strength and durability
• Heavy-duty ductile iron steering knuckles for reliable steering performance
• Factory torsion bars remain in the stock position, preserving factory ride quality
• Forged adjusting keys included to provide the proper amount of lift and alignment
• Designed for street and off-road use, offering a versatile upgrade
• Includes front and rear components for a comprehensive suspension lift
• Optimized for use with 33-inch or 35-inch tires with minimal trimming
• Maintains factory ride comfort while enhancing off-road capability
• Manufactured with high-quality materials for long-lasting performance

Construction & Design

The Fabtech Ultimate Suspension System is built with a focus on strength, durability, and precise fitment. The replacement upper control arms are crafted from 1.50-inch OD .120-inch thick wall DOM tubing, a material known for its excellent strength-to-weight ratio and resistance to bending or fatigue. The control arms are engineered with CAD software to ensure perfect geometry and alignment, resulting in improved handling and stability.

The heavy-duty ductile iron steering knuckles are designed to withstand off-road impacts and provide consistent steering response. The system's components are TIG-welded for superior weld strength and quality, ensuring a robust and reliable suspension upgrade. The use of factory torsion bars in their original position helps maintain the factory ride quality, while the forged adjusting keys allow for fine-tuning the lift height and alignment settings.

Performance & Sound

This suspension system enhances your vehicle's off-road clearance and stability, allowing you to confidently tackle rough terrain and obstacles. The increased ground clearance improves approach, departure, and break-over angles, making off-road adventures more accessible. On paved roads, you'll notice improved handling and a more commanding stance. The system is designed to deliver a smooth ride with minimal noise or harshness, maintaining the comfort you expect from your truck.

Installation & Fitment

The Fabtech Ultimate Suspension System is a bolt-on upgrade that requires no cutting or welding for installation. It is designed to utilize existing factory mounting points and components, simplifying the installation process. Basic hand tools and alignment are recommended to ensure proper fitment and performance. The system includes all necessary hardware and instructions for a straightforward installation, making it suitable for experienced DIY enthusiasts and professional installers alike.

• Easy bolt-on installation with no cutting or welding required
• Factory mounting points used for a secure fit
• Alignment recommended after installation for optimal performance

What's Included

• Replacement upper control arms with DOM tubing
• Heavy-duty ductile iron steering knuckles
• Forged adjusting keys for lift tuning
• All necessary hardware and mounting components
• Detailed installation instructions

Ideal For

This suspension system is perfect for off-road enthusiasts, truck owners seeking a moderate lift for larger tires, and anyone looking to improve their GM C/K2500HD or 3500HD's off-road capability while maintaining a comfortable ride on the street. It provides a balanced upgrade suitable for daily driving, weekend adventures, and light to moderate off-road use.

Emissions Note

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