
Specifications
- Brand
- SPC Performance
- Part #
- 10598
- UPC
- 082642105985

SPC Performance 3 in. Hd Support Plate(6)
$89.87
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SPC Performance 3 in. Hd Support Plate(6) - Spreads load from axle spacers and helps adjust ride height.
Key Features
- Fits 3" wide axle spacers.
- Plate thickness is 1/8".
- Spreads the load from "Z" Blocks and other axle spacers.
- Can be used to adjust ride height side-to-side.
- Comes in a pack of 6 plates.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
This 1/8" thick support plate from SPC Performance is designed to spread the load when using axle spacers like "Z" blocks. These spacers, common on heavy-duty trucks from brands like Freightliner and Kenworth, can create intense pressure points that might damage caster wedges. By using this plate, you distribute that pressure more evenly, preventing potential crushing or breaking of the wedge. This well-built plate is 3 inches wide and comes in a pack of six, giving you enough to handle multiple applications or adjustments.
Beyond just protecting your caster wedges, these support plates offer a practical way to fine-tune your suspension. You can use them to dial in ride height from side to side, helping to achieve a more balanced stance for your vehicle. They also provide a solid base for whatever caster shim you choose to use, allowing you to modify alignment precisely. It’s a simple but effective addition for anyone working on heavy-duty suspension setups.
Specifications
- Brand
- SPC Performance
- Manufacturer Part #
- 10598
- UPC
- 082642105985
Frequently Asked Questions
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SPC Performance 3 in. Hd Support Plate(6)

