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SPC zinc alloy axle shims (4" x 6.5" x 2.0°) are designed for over-the-road heavy-duty truck use and come packaged six shims per box. Zinc alloy construction improves compression strength and hardness versus aluminum options. These shims are recommended when using Z blocks or axle spacers—spread the load to prevent shim crushing—and are sized for common truck axle alignment adjustments.
SPC Performance ZINC SHIMS 4x6.5x2.0 deg.
