Best Performance Engine Valve Shims of 2025

The SPC Performance Shim is designed to enhance the performance of heavy-duty trucks and trailers, specifically those from Freightliner, Hendrickson, and Navistar. These universal shims are installed at the ends of torque rods, allowing you to easily adjust toe and thrust angles. This adjustment can lead to improved vehicle handling and tire wear, ensuring a smoother ride for you. With a quantity of six, these shims provide ample supplies for multiple adjustments, making them a convenient choice for maintaining your fleet's performance.

COMP Cams Valve Shims are essential for achieving accurate valve spring heights in your engine build. These shims are made from high-quality shim stock steel, ensuring that you can adjust the installed height of your valves with precision. This is crucial, as even small variations can greatly affect performance. Additionally, the shims are heat-treated to handle extreme camshaft profiles, providing durability in high-performance applications. With a consistent thickness, you can be confident that every shim will deliver the same reliable performance, making your installation process smoother and more efficient.

The SPC Rear Shim for GM is a pack of 6 shims designed specifically to adjust the rear toe on older Corvette models. With a thickness of 1/8 inch, these shims provide precise alignment and help improve the overall handling and performance of your vehicle. Whether you are a Corvette enthusiast or a professional mechanic, these shims offer a convenient solution for fine-tuning the rear toe of your Chevrolet Corvette between the years 1963 and 1982. With the SPC Rear Shim for GM, you can easily achieve the desired toe adjustment and ensure optimal driving experience on the road or track.

COMP Cams Valve Shims are essential for your engine projects. They help you achieve accurate installed heights for both intake and exhaust valves, ensuring consistent performance. Crafted from high-quality shim stock steel, these shims provide reliable measurements from the first to the last valve, which is crucial for maintaining proper spring pressures. Additionally, they are heat-treated to endure extreme conditions, making them suitable for high-performance camshaft profiles. With a diameter of 1.480 inches and a thickness of 0.060 inches, this set of 100 shims is designed to meet your engine's needs efficiently.

The SPC Shim 1/16in. is designed for versatility, providing universal compatibility for your heavy-duty tandem trucks and trailers. By installing these shims at the ends of torque rods, you can easily adjust the toe and thrust angles, enhancing vehicle handling and stability. This feature is particularly beneficial for ensuring better tire wear and improved alignment. With a quantity of six, you have enough shims to make necessary adjustments, maximizing convenience and efficiency in your maintenance routine. Whether you drive a Freightliner, Hendrickson, or Navistar, these shims offer a practical solution for your vehicle's performance needs.

The Crown Pinion Shim Kit offers exceptional construction and durability, ensuring long-lasting performance for your vehicle. With top-notch materials, this kit enhances not only the functionality of your engine but also contributes to a smoother ride. You can expect improved comfort as well, thanks to its high-quality design. Additionally, the stylish elements of this kit can elevate the overall look of your vehicle, making it stand out on the road. Investing in this shim kit means investing in reliability and style for your automotive needs.

The Yukon Carrier Shim Kit is designed to simplify your installation process with its unique interlocking design. This feature ensures that you can easily align and secure the shims, saving you time and effort. Additionally, this kit is compatible with various Ford and GM models, making it versatile for users with different vehicles. By choosing this product, you can enhance the performance of your engine's valve system, leading to improved efficiency. The durability of the materials used also promises long-lasting use, giving you peace of mind during your installation.

The SPC Performance Shims are designed to improve your truck's axle alignment. Made from durable aluminum alloy, these shims are built to last while providing reliable performance. With a size of 3 x 6 inches and a 2.5-degree angle, they help ensure your vehicle runs smoothly, enhancing its handling and stability. This set includes six shims, giving you plenty of options for adjustments, which can lead to better tire wear and overall vehicle efficiency. Whether you're a DIY enthusiast or a professional mechanic, these shims offer the convenience you need for axle adjustments.

COMP Cams Valve Shims are essential for achieving the perfect installed height during your engine builds or spring upgrades. These shims help you compensate for variations in cylinder heads, valve lengths, and springs, ensuring consistent pressure across all valves. Made from high-quality shim stock steel, they offer precise adjustments that maintain performance from the first valve to the last. Additionally, these shims are heat-treated to handle the demands of high-performance camshaft profiles, making them a reliable choice for any serious engine enthusiast.

The COMP Cams Shim is a high-quality product made in the United States, designed for automotive applications. Its user-friendly design ensures that you can easily install it without hassle. Durability is another key feature, allowing you to rely on it for long-term performance under various conditions. As part of the engine valve shims category, this shim plays a crucial role in optimizing engine function, providing you with peace of mind while driving. With part number 6100BS, you can easily identify this reliable shim for your automotive needs.