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This is a genuine set of WonderDiscs New Old Stock (NOS) leaf spring inserts, proudly made in the USA. Marketed as a way to "put roller bearings in your springs," these vintage anti-friction discs are designed to be installed between the leaves of your vehicle's leaf spring pack. By reducing inter-leaf friction, they improve ride quality, eliminate squeaks, and allow the suspension to react more fluidly to road imperfections. These are a classic "period-correct" aftermarket upgrade frequently used on early-to-mid 20th-century passenger cars and trucks to achieve a smoother, more modern ride feel without replacing the entire spring assembly.
| Make | Model | Year | Engine | Notes |
|---|---|---|---|---|
| Universal | Most Models | Vintage | All | Fits vehicles equipped with leaf spring suspension packs. |
Universal Fitment for Vintage Vehicles
Actual Item Photos: Please look over the pictures carefully, as they depict the exact item you will receive. We utilize high-resolution photos of our current physical inventory rather than generic stock images so you can verify the specific condition, markings, and authenticity of this vintage part prior to purchase.
A Note on Fitment Accuracy: We manually research and cross-reference our fitment data using vintage manufacturer catalogs. While we strive for 100% accuracy, these decades-old resources—and the humans reading them—can occasionally contain errors. Additionally, these parts may fit other vehicles and years not explicitly listed in our data. To ensure a seamless restoration, we kindly ask that you perform your own due diligence and verify that this specific part number is correct for your application prior to purchase.
This is a high-quality vintage component. As with many New Old Stock (NOS) parts, the item and its packaging may exhibit minor "shelf wear" consistent with several decades of storage. This can include light surface oxidation, dust, or minor box deterioration, none of which affect the structural integrity or performance of the part. These components represent the original manufacturing quality of a bygone era, often far exceeding the standards of modern aftermarket replacements.
