What is SRAM XD and XDR?
May 20, 2019

What is SRAM XD and XDR?

SRAM created the XDR and XD drivers to allow us to run cassettes that had cogs with less than 11 teeth, which is great if you want to go and run a 1x drive train and still have a big top gear. It will help to eliminate the topping out that some of us were getting on the flat and the much more likely topping out when we were descending.

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