Lenco CS2 Sprags

When are you changing your CS2 sprags? I've been told to change them when the wear marks get to .080" wide.

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The TAFC team I was on replaced them whenever the car shook the tires hard. We used "helicopter sprags" named so because they are literally used in helicopters. Speaking of them... can someone please give me the part number off one? I think a machinery sales company right around the corner of my shop is one of the country's biggest seller of the manufacturer of these sprags (over running clutches). Lenco gets $600 a set. It would be interesting to see if I can get them any cheaper.

 

Any other info?