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These SPC stackable fixed-change shims make rear alignment changes on twist-beam axles simple and repeatable. Designed for toe adjustments in ±.10° increments and camber in ±.25° increments, the shims can be combined—stacking up to two—to achieve the exact correction required. Pair a toe shim with a camber shim to dial in alignment during service, restoring proper rear geometry on compatible models with twist-beam suspension.
SPC Performance GM Rear Toe + - .10 Shim
