SPC Performance ZINC SHIMS 3 x 6 x 3.5 deg.

When you need to dial in the alignment on a tandem trailer or heavy-duty truck, these axle shims from SPC Performance are a solid choice. They're designed to quickly and accurately adjust the angle of your front or rear axles, helping you get everything tracking straight.

These aren't your typical aluminum shims. SPC's Zinc Alloy construction offers a notable step up in performance. You get the hardness similar to their premium manganese bronze shims, along with much better compression strength compared to aluminum. This means they'll hold their shape and maintain your alignment settings reliably, even under heavy loads. Each box contains six shims, each measuring 3 inches wide by 6 inches long with a 3.5-degree angle.

If you're using Z Blocks or axle spacers with these shims, it's a good idea to spread the load to prevent the shim from crushing. This helps ensure they last and keep your alignment true.