We cover this spring kit with our own 2-year product warranty; Tesla only warranties parts they manufacture, so they will not service a non-Tesla spring. As for the rest of the car, the Magnuson-Moss Warranty Act means your overall warranty is not voided just for fitting aftermarket springs, though a manufacturer can charge you for a repair if your change directly caused it. We are enthusiasts and owners, not lawyers, so read the law and your warranty documents.
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