Fabtech Rear Leaf Spring Block & U-Bolt Kit

2011–2019 GM C/K3500HD

Part #: FTS21111

Overview

The Fabtech 1-inch Rear Leaf Spring Block & U-Bolt Kit is designed to enhance the suspension performance of your GM C/K3500HD pickup truck from 2011 to 2019. This kit provides a simple yet effective solution for improving load capacity, leveling the stance, and restoring proper ride height after suspension modifications or heavy hauling. Whether you're a daily driver, work truck operator, or off-road enthusiast, this kit helps support your vehicle's performance and durability.

Constructed with high-quality materials and precision engineering, this leaf spring block and u-bolt kit ensures a secure fit and long-lasting performance. It is ideal for those looking to lift their truck slightly for better clearance, improved handling, or to accommodate larger tires. The installation process is straightforward, making it accessible for both DIY enthusiasts and professional mechanics.

Key Features

The Fabtech Rear Leaf Spring Block & U-Bolt Kit offers several key features that enhance your vehicle's suspension system:

• Manufactured in the United States with premium materials for durability and reliability.
• Precisely engineered 1-inch thick steel blocks designed to evenly distribute load and prevent axle wrap.
• Heavy-duty U-bolts and hardware included, ensuring a secure and stable installation.
• Designed to restore factory ride height or slightly level the vehicle for a more aggressive stance.
• Compatible with OEM leaf springs, providing a direct bolt-on upgrade without the need for modifications.
• Ideal for supporting heavier loads, towing, or off-road adventures where suspension stability is critical.
• Corrosion-resistant finish to withstand harsh environments and extend product lifespan.

Construction & Design

The Fabtech 1-inch Rear Leaf Spring Block & U-Bolt Kit is crafted from high-strength steel, ensuring robustness and longevity under demanding conditions. The blocks are precision-machined to exact specifications, providing a perfect fit that maintains proper axle alignment. The included U-bolts are heavy-duty and designed to withstand the stresses of towing and off-road use, with a corrosion-resistant coating to prevent rust and corrosion over time.

The design emphasizes ease of installation, with all necessary hardware included for a bolt-on process that typically requires no cutting or welding. The kit's compact dimensions (15 x 7 x 6 inches) make it easy to handle and install, whether in a professional shop or at home in your garage.

Performance & Sound

While this kit primarily focuses on suspension support and ride height correction, it also contributes to improved handling and stability, especially when carrying heavy loads or towing. The added support reduces axle wrap and enhances overall suspension response, leading to a more confident driving experience. No significant changes to vehicle sound are expected, but the improved load distribution can result in a more controlled and stable ride.

Installation & Fitment

The Fabtech Rear Leaf Spring Block & U-Bolt Kit is designed as a direct bolt-on upgrade for your GM C/K3500HD from 2011 to 2019. The installation process is straightforward and typically requires basic hand tools. No cutting, drilling, or complex modifications are necessary. It is recommended to follow the included instructions carefully to ensure proper alignment and safety. For best results, a professional alignment is advised after installation.

• Simple bolt-on installation with common hand tools
• No cutting or welding required
• Suitable for DIY enthusiasts and professional installers alike

What's Included

• One pair of 1-inch steel leaf spring blocks
• U-bolts and hardware for secure mounting
• Installation instructions

Ideal For

• Owners looking to level their GM C/K3500HD trucks
• Those needing to support heavier loads or towing capacity
• Off-road enthusiasts seeking improved suspension stability
• Anyone restoring factory ride height after modifications

Emissions Note

This product is designed for off-road or recreational use only and may not be legal for street use in all regions. Please check local regulations before installation to ensure compliance with emissions laws.