It looks like most of their 10-speed components, X7 and up, have adopted their 2X10 technology.
But manufactureres are still mixing and matching compenents from them and others in their builds. Look at the specs for Cannondale's 2011 Flash 1, for example:
Crank: FSA Afterburner 386 BB30, 39/27
BottomBracket: FSA BB30
Rear Cogs: Shimano SLX, 11-36, 10-speed
Front Derailleur: SRAM X7
Rear Derailleur: SRAM X9
Shifters: SRAM X7
So, would such a bike get the benefits of "SRAM 2X10"? Would the gear ratio on the crank throw it all off? How does Exact Actuation and X-Glide work in a mixed group like this?
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Thread: Confusion about SRAM 2X10