SPC Performance Specialty Shims Kit

Application: Any solid axle 2WD or 4WD vehicle, 2011–2025

Part #: 89299

Overview

The SPC Performance Specialty Shims Kit 89299 is a versatile solution designed to help you fine-tune the alignment and caster angle of your solid axle vehicle. Whether you're restoring a classic or optimizing your off-road rig, this kit provides precise adjustments to improve handling, stability, and tire wear. Crafted for enthusiasts who demand accuracy and durability, these shims are ideal for both street and off-road applications.

With the SPC Shims Kit, you gain the ability to adjust caster angles from 1/2° to 4°, allowing you to tailor your vehicle's steering response to your driving style and terrain. Proper caster alignment enhances straight-line stability, steering feel, and cornering performance, making this kit essential for those seeking improved control and confidence behind the wheel.

Key Features

The SPC Performance Specialty Shims Kit 89299 offers a range of technical features designed for durability and precise adjustment:

• Constructed from high-quality zinc-coated material for corrosion resistance and long-lasting performance.
• Includes a set of shims with a 1° taper, specifically engineered to provide accurate caster adjustments.
• Designed for easy installation on any solid axle 2WD or 4WD vehicles, compatible with a wide range of makes and models from 2011 to 2025.
• Twice the coverage with a comprehensive set that minimizes the need for multiple part inventories, simplifying your repair or customization process.
• Allows for caster adjustments from 1/2° to 4°, enabling precise alignment tuning for improved handling and tire wear.
• Manufactured to meet or exceed OEM standards, ensuring a perfect fit and reliable performance under demanding conditions.
• Ideal for off-road enthusiasts, performance tuners, and restoration projects aiming for optimal alignment geometry.

Construction & Design

The SPC Performance Shims are crafted from durable zinc HD-coated steel, providing excellent corrosion resistance and longevity. The 1° taper design ensures accurate and consistent caster adjustments, while the compact 3-inch width allows for versatile installation in various vehicle configurations. The high-precision manufacturing process guarantees a snug fit and reliable performance, even in rugged off-road environments or high-stress street driving.

Performance & Sound

While these shims are primarily designed for precise alignment adjustments, they contribute to overall vehicle stability and handling. Proper caster alignment can improve steering response and reduce wandering, leading to a more confident driving experience. Since they are a mechanical adjustment component, they do not produce sound or noise but play a crucial role in optimizing your vehicle's suspension geometry.

Installation & Fitment

The SPC Performance Specialty Shims Kit 89299 is a straightforward bolt-on upgrade that requires no cutting or drilling. Installation involves removing the existing components, inserting the shims between the axle and control arm or steering components, and reassembling. Basic mechanical skills and standard hand tools are sufficient for installation. No special tuning or alignment adjustments are necessary beyond the initial setup, making this an accessible upgrade for DIY enthusiasts and professional technicians alike.

• Easy to install with common hand tools
• No cutting, drilling, or complex modifications required
• Designed for quick, reliable adjustments to caster angle

What's Included

• Set of zinc-coated caster shims with 1° taper (Part # 89299)
• Comprehensive instructions for proper installation and adjustment

Ideal For

• Off-road enthusiasts seeking precise alignment for improved handling
• Performance tuners aiming to optimize steering response
• Restoration projects requiring accurate caster adjustments
• DIY mechanics looking for a reliable, easy-to-install shim kit

Emissions Note

This product is designed for use on vehicles in compliance with emissions regulations. Always verify compatibility with your specific vehicle model and local regulations before installation. Proper installation and alignment are essential for maintaining vehicle safety and performance.