With the release of the 1x12 drivetrain of AXS groupsets, SRAM developed a Direct Mount, 107 BCD, 4-hole spider design for both the crankarms and power meter system. Utilizing technologies and performance features learned from the Eagle mountain drivetrains, the machined aluminum 1 X-Sync 12-Speed Chainring is stout, easy to mount or switch, offers long life and most importantly, the exceptional chain retention you require for a wide ranging 1x12 drivetrain, whether in a road configuration, or the hybrid "mullet" set-up, which features an Eagle 12-Speed mountain cassette and rear derailleur.

This is achieved with a singular SRAM chainring technology, which applies the X-Sync tooth profiling and shaping to an alternating narrow-wide tooth set-up. Regardless of the chainline or gearing combination, under any load, you get exceptional chain retention. Mud and grime shedding is also factored in, with voids that allow such materials to escape- not push the chain up and off the teeth. There is only one consideration required when a "mullet" set-up is used. For a full road 1x12 drivetrain, you will get better performance with a SRAM 12s Flattop chain, but the wider range of the mullet requires you to use an Eagle 12s mountain chain.