Wilwood Disc Brake Caliper Alignment Shim Kit
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Wilwood Caliper Alignment Shim Kits: Precision That Keeps Your Brakes in Check
When building or upgrading a high-performance disc brake system, the difference between a perfectly centered caliper and a misaligned one can mean the difference between confident stopping power and uneven pad wear, brake noise, or drag. Wilwood Engineering — a name synonymous with performance disc brakes since 1977 — brings the same exacting standards to their disc brake caliper alignment shim kits that they apply to every component in their catalog.
Why Caliper Alignment Shims Matter
Caliper alignment shims are thin, precisely dimensioned spacers placed between the caliper and its mounting bracket to center the caliper over the rotor. Even minor misalignment can cause pads to contact the rotor unevenly, leading to accelerated wear, vibration, and noise. Wilwood brake shims help correct pad and rotor misalignment to prevent brake noise — making them an essential detail in any careful brake installation or rebuild.
Wilwood's Shim Kit Lineup: Engineered for Versatility
Wilwood Engineering designs and manufactures high-performance disc brake systems, and since the company's inception in 1977, they have developed a substantial matrix of brake components and engineering techniques that allow them to quickly and reliably create brake systems for almost any application. Their caliper shim kits are a direct extension of that philosophy — offering multiple thickness options and bolt-hole sizes so builders can dial in caliper position with surgical accuracy.
These steel shims are offered in packs of 10 to give you the perfect spacing needed to center your calipers on your rotors. Wilwood's lineup spans a range of thicknesses and bolt-hole configurations to suit different caliper mounting hardware:
- Part number 240-4384 offers precise 0.375" ID x 0.875" OD x 0.035" thick shims for optimal caliper alignment , designed for 3/8" diameter caliper bolts.
- Part number 240-4385 is a caliper shim kit for 7/16" diameter bolts , giving builders with larger hardware the same level of fitment precision.
- Disc brake caliper shim packs in 0.032" thickness are also available in packages of ten , along with options in 0.035" thick steel and 0.063" thick steel, also in packages of ten — allowing builders to stack or select the exact spacing required.
Built to the Same Standard as the Rest of the System
Wilwood is a leading manufacturer of high-performance brake systems and components to fit a wide range of track and street applications, offering everything from individual components like rotors, calipers, and pads to complete bolt-on kits. Their caliper shim kits follow that same ecosystem approach — they are sized and toleranced to work seamlessly with Wilwood's own caliper families, ensuring that a custom bracket-mounted Wilwood caliper can be precisely centered without guesswork.
Shims are placed between the caliper spacer and the caliper during final assembly, allowing the installer to fine-tune position before locking everything down. This small detail has an outsized impact on brake feel, longevity, and safety — especially on race or track-day vehicles where brake performance is paramount.
With headquarters in Camarillo, California, Wilwood employs approximately 320 people and maintains on-shelf stock of more than 300 different brake calipers, 200 rotor designs, and 100 master cylinder designs. This depth of catalog means Wilwood's shim kits are designed to serve a real, broad range of real-world build scenarios — not just a niche afterthought.
Who Needs Wilwood Caliper Alignment Shims?
Whether you are assembling a fresh performance brake kit on a muscle car, setting up a dedicated road-race build, or correcting a caliper that has developed a slight rub after suspension changes, Wilwood caliper alignment shim kits provide the incremental adjustment you need. Because they are made from durable steel and are compatible with Wilwood's own hardware specifications, they are a natural first choice for anyone already running — or planning to run — a Wilwood brake system.
