‘If it ain’t broke, don’t fix it’.
That old adage makes a ton of sense in most cases. However, the point the coiner of that phrase failed to take into account is if you really can build something better than what currently exists, why not give it a rip? SRAM is pretty sure that, for more than a few riders, their new XX1 1×11 drivetrain is just such an advance.
The chain is specific to the system and mates perfectly with the custom shaped and sized teeth on the front chainring. While it looks a bit like a puzzle it works like mechanical duct tape.