Originally Posted by dddd

The Golden Boy wrote:
"...As an aside- someone posted an ad (Yeti?) that had XC Pro thumb shifters as an option to use with M900 XTR derailleurs..."

This would have worked quite well (especially with Suntour having by this time gone to uniform/symmetrical 8s cog spacing), assuming that they were attaching the derailer cable to the "wrong" side of the rear derailer pinch bolt!

I've gotta think that they surely did just that on these special bikes.