SRAM X-Sync Road Direct Mount Chainring for Rival - 46t, 12-Speed, 8-Bolt Direct Mount, BlackSRAM X Sync Road Direct Mount Chainrings for Rival drivetrains feature a wide tooth, narrow tooth design to provides maximum chain control. SRAM X SYNC wide tooth, narrow tooth chainring technology provides maximum chain control Laser etched chainring finish is more durable X Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear Item Specifications Defined Color Black Direct Mount Type Direct