i don't reccomend the ones on ebay. it seems to me like all it did was add 2 pounds. it isn't really the sturdy just beind connected in the front and rear. maybe that is just my experience though. my revo has done fine without a cage and i ride it hard. or crash it hard cause i can't drive. but if you really think you need one then i think the rc solutions one is the best. or just make one.