Does the Stealth Performance Package include upgraded sway bars?

[Andy B]

Will replacing the factory sway bar void your warranty?

By law (Magnuson Moss Act) the only way it can legally impact your warranty is if the problem you want fixed can be traced to the aftermarket part.

For example if you add a blower and then the engine fails you're out of luck.

https://en.wikipedia.org/wiki/Magnuson–Moss_Warranty_Act

 

[NASCAR Mike]

I have the Hellwig's on my 17. No change in ride quality, the suspension is not stiffer, but the cornering is greatly improved. Next to the SCT X4 tuner, it was one of the best upgrades on my Expy.