I just called two dealers in my area. One said it would void anything the aftermarket touches or effects if there is an issue, even if it is TRD take-off suspension since it did not come installed in my SR5 from the factory.
The other said as long as it is TRD branded, like the Off Road Hybrid take off suspension a member is giving me, then they'd cover it. Bilsteins or a preload collar they would void the warranty on suspension parts if it changed any associated angles.
