Originally Posted by
cmdr
I work for a Specialized dealer. I asked the inside rep about this when I bought my Stumpy. You are correct in your assumption that what you are looking at is an XT crank. It just doesn't have the finish and the carbon/alloy middle chainring that the "true" XT crank has. He says it's so they can hit a lower price-point while still offering higher quality components.
The composite/steel ring that now comes with the M77x crank didn't come with the M76x....also the crank arms differ in shape rather than just graphics (have both).