TAKE LIFE BY THE HANDLEBARSGoing to eleven is rad; SRAMGCOs 11-speed mountain bike drivetrains are popular for a variety of reasons, not the least of which is their near-inability to drop a chain. However, until the release of the X1 group, getting a SRAM 11-speed drivetrain required a bit of financial finagling. Not so any more, and this X1 Chain is a perfect example. It lacks the Hard Chrome treatment of the XX1 chain, but functions at a similar level. . FEATURES11-speed-specificDesigned for use with SRAMGCOs X-SYNC narrow-wide chainrings