Yea, no TRD lift. I guess it mainly depends on the dealer you go to for warranty. If one says it'll void it try driving down the road and seeing what the next one says. My dealer fixed my steering pump under warranty even after they determined the cause of the problem was my 33" tires. Or so say they. They fixed a leak I had in the cab under warranty when they said my body lift was at fault. And if a body lift doesn't void warranty, some a-arms and coilovers definitely should not.
If you bolt on something, it's only going to affect the warranty of what you bolt on, like if you bolt on coilovers and your rear-leaf spring cracks, they're gonna replace that.
Do you have a new-warranty? I believe they are a lot stricter on used car warranties.
