Caliper Shim 10pk .063in 7/16in Hole

The Caliper Shim 10pk .063in 7/16in Hole from Wilwood is an essential precision component for any serious brake system builder or performance mechanic. These steel shims are engineered to fine-tune caliper alignment and eliminate parasitic drag that compromises stopping power and fuel economy. Whether you're assembling a complete big-brake upgrade, replacing worn rotor hats, or dialing in an existing brake package, caliper shims allow you to dial in pad-to-rotor spacing with micron-level accuracy—critical work that separates a mediocre brake job from a bulletproof system.

Each shim in this ten-pack measures 0.063 inches thick with a 0.477-inch inner diameter and 0.922-inch outer diameter, sized specifically for the 7/16-inch hole standard found on most OEM and aftermarket caliper mounting brackets. The steel construction resists thermal cycling and maintains dimensional stability under sustained high-temperature braking loads—essential when running track-duty brake fluid or repeated hard stops. By inserting these shims between the caliper bracket and rotor hat, you correct runout, compensate for manufacturing tolerances, and prevent the unwanted pad knockback that causes spongy pedal feel or uneven pad wear patterns that kill brake longevity.

This ten-pack is ideal for technicians building dual-caliper setups, fabricators assembly-lining brake conversions, or shade-tree mechanics fine-tuning a single-vehicle brake rebuild. The 0.063-inch thickness is the industry standard thickness for correcting minor alignment issues without creating binding or hard spots. Wilwood shims integrate seamlessly into any brake system using quarter-inch caliper bolt patterns and are compatible with both floating and fixed-caliper designs—making them the go-to solution for restoring brake feel on high-performance street cars, track vehicles, and dedicated race platforms where brake modulation directly impacts driver confidence and lap times.