FORMULA, WHITELINE, POLYAIR Bulk Alignment Shims

Bulk alignment shims provide workshops, suspension specialists and alignment technicians with a practical supply of shims for precise wheel alignment and suspension geometry correction. Used in compatible suspension and alignment systems, shims allow small, controlled changes to wheel geometry without replacing major suspension components.

Alignment shims are commonly used when adjusting camber or caster during a wheel alignment. By adding or changing the thickness of the shim at the appropriate mounting point, technicians can alter suspension geometry in measured increments and bring alignment angles closer to the required specification.

For workshops completing alignment work regularly, bulk alignment shim packs help keep commonly required components readily available. Rather than sourcing individual shims for each alignment job, trade packs provide a workshop-ready supply for repeated professional use.

What Are Alignment Shims?

Alignment shims are precisely sized components installed at specific suspension mounting points to alter the position or angle of a suspension component. This small change can affect wheel geometry and provide the additional adjustment required during an alignment.

Depending on the suspension design and application, alignment shims may be used with compatible camber and caster adjusters or factory mounting brackets. Their purpose is to provide controlled geometry correction where shim-based adjustment is supported by the suspension system.

Different shim thicknesses provide different amounts of adjustment. This allows a technician to select the appropriate shim or combination required to achieve the intended alignment setting.

Because suspension designs and alignment requirements vary, the correct shim should always be selected according to the specific application and alignment measurements rather than assuming that one shim size or thickness is suitable for every vehicle.

Camber and Caster Adjustment

Camber and caster are two important wheel alignment angles that influence how a vehicle steers, handles and maintains tyre contact with the road.

Camber describes the inward or outward tilt of the wheel when viewed from the front of the vehicle. Incorrect camber can contribute to uneven tyre wear and may affect handling and stability.

Caster describes the steering axis angle when viewed from the side of the vehicle. Caster settings influence steering stability, steering feel and the tendency of the steering to return towards centre.

Where the suspension design allows shim-based adjustment, camber and caster shims give alignment technicians a way to fine-tune these angles. The required correction should be determined using appropriate wheel alignment equipment and the relevant alignment specifications.

Alignment shims are therefore not simply spacers. They form part of a precision alignment process in applications designed to use them.

Why Use Wheel Alignment Shims?

Suspension geometry can move outside the desired alignment specification for a variety of reasons. Component replacement, suspension changes, normal wear or previous repairs can all affect the final wheel alignment.

In compatible applications, wheel alignment shims provide an additional method of correcting geometry without unnecessary replacement of otherwise serviceable suspension components.

Precise adjustment can help achieve the required camber or caster settings, supporting predictable steering behaviour and more consistent tyre contact. Correct wheel alignment can also help address alignment-related tyre wear where incorrect geometry is contributing to the problem.

The amount of correction required should always be measured first. Adding a thicker shim does not automatically produce a better result. The objective is to achieve the appropriate geometry for the vehicle and application.

Choosing the Correct Alignment Shim Thickness

Shim thickness is an important consideration when carrying out alignment correction. Different thicknesses allow technicians to make different degrees of adjustment. Smaller changes may require a thinner shim, while a larger correction may require a different thickness or shim arrangement, depending on the suspension design.

Before installing alignment shims, technicians should identify the current alignment measurements, determine the required correction and confirm how the relevant suspension system responds to shim adjustment.

The mounting location, suspension configuration and compatibility of the shim must also be considered. Always refer to the appropriate specifications and individual product information before installation.

Using accurately sized shims allows technicians to make repeatable adjustments and reduces unnecessary trial and error during the alignment process.

Bulk Alignment Shim Packs for Workshops

For a professional workshop, availability can be just as important as the component itself. Alignment work often requires relatively small parts, but not having the required shim on hand can interrupt an otherwise straightforward job.

Fulcrum's alignment shims are available in 1.5 mm, 3.0 mm and 6.0 mm thicknesses. Shims are supplied in packs of 5 or 10 for everyday workshop use. For high-volume users, selected thicknesses are also available in trade packs of 100.

Pack sizes and thicknesses vary between applications, so check the product page for the shim size, quantity and vehicle fitment before ordering.

For higher-volume workshops, buying alignment shims in bulk can also simplify ordering by consolidating frequently required workshop components into larger quantities.

Alignment Shims and Accurate Suspension Geometry

Accurate wheel alignment is about more than getting a vehicle to travel in a straight line. Suspension geometry affects steering response, stability, tyre contact and tyre wear.

Alignment equipment provides the measurements, while adjustment components allow technicians to make the physical corrections required. In suspension systems designed for shim adjustment, alignment shims form part of this process by enabling controlled changes to geometry.

However, shims should only be used where appropriate for the suspension design. They should not be used to disguise worn, damaged or faulty suspension components.

If alignment measurements cannot be brought within the appropriate specification, the suspension and steering system should be inspected to identify whether wear, damage or another mechanical issue is preventing correct adjustment.

When Are Alignment Shims Required?

The need for an alignment shim is determined by the suspension design and the measurements obtained during a wheel alignment.

A technician may consider shim adjustment when camber or caster falls outside the required specification and the applicable suspension system provides for shim-based correction. Shims may also be required after certain suspension components have been replaced or when geometry needs to be fine-tuned during an alignment.

Before making any adjustment, the condition of relevant steering and suspension components should be checked. Worn bushes, damaged components or excessive movement can affect alignment measurements and should be addressed rather than compensated for incorrectly with additional shims.

Professional measurement is particularly important because relatively small geometry changes can influence alignment results.

Shop Bulk Alignment Shims at Fulcrum Suspensions

Whether you operate an alignment workshop, suspension business or automotive repair facility, keeping the right alignment components available can help jobs move through the workshop efficiently.

Fulcrum Suspensions combines decades of suspension and steering experience with specialist technical advice and professional wheel alignment services. If you are unsure which alignment shim or thickness is appropriate, Fulcrum can assist with product and fitment guidance before ordering.

Shop bulk alignment shims online for professional workshop use, with convenient delivery options available. For customers requiring more than parts alone, Fulcrum also provides professional suspension and wheel alignment services through its workshop network.