Both interfaces allow for a 10-tooth start cassette in a way that allows for the strongest hub, the lightest cassette and derailleur (because a larger cassette means a larger derailleur) and optimal load transfer from the cassette into the hub.
What are the main benefits of the XD and XDR interfaces?
Related articles
- Why did SRAM create the XDR driver body interface?
- Where do I get an XD or XDR driver for my wheel?
- Do SRAM XD cassettes require different installation tools than traditional cassettes?
- At what levels will the derailleur power indicator lights come on? How many hours of riding can I expect to get on a full derailleur battery charge?
- Do XD or XDR equipped wheels require special frame rear dropout designs?