Urethane. Useless stuff for bushings. Too much maintenance involved and will still fall/cold-run if maintained. I need less maintenance on my suspension bearings in the Trans Am (which I think is just fine from a comfort point of view) than any of my urethane anti-sway bar bushings has required. ??A fix wont be possible until they re-engineer the suspension a bit. It's a design limit due to having to use rubber to keep it quiet. Otherwise if they used urethane bushings it'd sound like a Radio Flyer wagon that was left out in the rain for 5 years.
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