SPC Performance Pinion Angle Shims

1972–1986 Jeep CJ5, CJ6 & CJ7

Part #: 80799

Overview

The SPC Performance Pinion Angle Shims are essential components designed to optimize the alignment of your rear differential in Jeep CJ models from 1972 to 1986. Whether you're restoring a classic Jeep or upgrading your suspension for improved handling, these shims help you achieve the correct pinion angle, which is crucial for preventing driveshaft vibrations and ensuring smooth power transfer. Crafted for both 2WD and 4WD configurations, these shims are a reliable solution for enthusiasts seeking to restore factory specifications or fine-tune their vehicle's drivetrain geometry.

If you're experiencing vibrations, uneven tire wear, or just performing a suspension lift or leveling, these pinion angle shims will help you correct the driveshaft alignment. Proper pinion angle adjustment not only enhances drivability but also extends the lifespan of your drivetrain components. Designed with durability and precision in mind, these shims are suitable for a variety of Jeep CJ models, making them a versatile addition to your off-road or restoration project.

Key Features

SPC Performance's Pinion Angle Shims are engineered to provide precise correction of your rear differential's angle, ensuring optimal driveshaft alignment and performance. Made from high-quality materials, these shims are built to withstand the rigors of off-road driving and daily use. Their robust construction guarantees long-lasting performance and reliable fitment.

• Manufactured from high-quality HD zinc alloy, aluminum, or manganese bronze for strength and corrosion resistance.
• Available with a 3.5-degree correction to adjust the pinion angle for improved driveshaft operation.
• Designed to fit different width leaf springs, accommodating various Jeep CJ configurations.
• Easy to install with no special tools required, making it suitable for DIY enthusiasts and professional mechanics alike.
• Helps eliminate driveshaft vibrations and reduce wear on U-joints and differential components.
• Compatible with both 2WD and 4WD Jeep CJ models, ensuring versatile application.
• Enhances overall vehicle handling and drivetrain longevity by restoring proper angle alignment.

Construction & Design

The SPC Performance Pinion Angle Shims are crafted from durable materials such as high-grade zinc alloy, aluminum, or manganese bronze, ensuring they can withstand the demanding conditions of off-road and street driving. Their precision-machined design guarantees a perfect fit and consistent correction. The shims feature a 3.5-degree angle correction, which is ideal for most suspension lift or leveling scenarios, helping you achieve the ideal driveshaft angle for smooth operation.

The high-quality construction not only provides strength but also resists corrosion, maintaining their integrity over time. The design allows for straightforward installation, often requiring only basic tools, making it accessible for both seasoned mechanics and DIY enthusiasts. These shims are a cost-effective way to improve your Jeep's drivetrain alignment without extensive modifications.

Installation & Fitment

Installing the SPC Performance Pinion Angle Shims is a straightforward process that typically involves raising or lowering the differential to the desired angle and inserting the shims between the differential and the spring perch. No cutting, drilling, or complex modifications are required. Basic hand tools are sufficient to complete the installation, which can often be done in under an hour. Proper alignment is critical, so it is recommended to verify the pinion angle with a protractor or alignment tool after installation.

• Designed for easy bolt-on installation with factory or aftermarket leaf springs.
• No special tuning or adjustments are necessary once installed.
• Ideal for Jeep CJ models from 1972 to 1986, including CJ5, CJ6, and CJ7.

What's Included

• High-quality pinion angle shim with a 3.5-degree correction
• Mounting hardware and instructions for proper installation

Ideal For

• Jeep CJ owners restoring or upgrading their suspension
• Off-road enthusiasts seeking improved drivetrain alignment
• Restorers aiming to maintain factory specifications
• Anyone experiencing driveshaft vibrations or uneven tire wear