1x-specific for use with 10-46T XPLR 13-speed cassette and Flattop chains Requires frame with UDH interface Hangerless Interface and Full Mount attachment allow for the most precise shifting and the ultimate resistance to impact Simple setup with no adjustment screws Replaceable and rebuildable parts available Compatible with existing AXS batteries Carbon and aluminum cage for added strength Largest Cog: 46 Chain Wrap Capacity (teeth): 36 Cage Length: Long Rear Der/Shifter Compatibility: SRAM eTap AXS Drivetrain Speeds: 13 (Will work with 12 speed) Chain compatibility: Road Flattop D1, E1 Weight: 418g. AXS Battery sold separately