Don't know of any that are made for the 4runner. My uncle has a set on his truck, they're very nice. However, it seems they'd be easily damaged off road though. I believe his set was in the neighborhood of $1500. For his truck I feel they're a necessity (12-14"lift), but on ours pretty much a waste. Sliders would be a much better investment imo.
Oh I mean I wasn't planning on getting them, I just wanted to see if anyone had them. I'm gonna rock the no running boards till the end!!!....(or until I can afford sliders)...
I looked into them after seeing my uncles,, but I couldn't find any made for the 4runner. Wife is under 5ft and says I gotta keep running boards, so was considering those for a cleaner look. I don't think you'll find anyone with them, I know I've never seen it or heard it discussed.