Yep - most all "flex" fans, where the blades bend as RPM increases, are a way to cheap out of using a true clutch (IMO). Most of ones I've seen are available in lots of pretty colors, which is the most important attribute of a cooling fan, right? What color it is? Personally I want the fan that moves the most air! Or at least the proper amount of air. And that generally ends up being the stock fan with a good clutch.

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