All Balls Racing wheel spacer kits are engineered with a lightweight black anodized 6061‑T6 aluminum body, delivering a low‑weight foundation that maintains structural integrity under high‑load conditions. The aluminum core is encased in a zinc‑plated hardened steel shell, which provides long‑term durability and resistance to corrosion and wear.
For applications requiring a steel spacer, the kit offers a zinc‑plated hardened steel construction. This material choice delivers comparable strength and longevity while ensuring compatibility with a wide range of racing wheel assemblies.