Q: Will installing sway bars void my Model S warranty?

The rear bar is a straightforward bolt-on and does not automatically void your Tesla warranty; under Magnuson-Moss, Tesla must tie a specific failure to the part to deny a claim. The front bar is different in practice, because its subframe-drop install raises the chance of a denied claim, which is why we recommend professional installation and a conversation with our team first. Keep your factory hardware either way.