* 1x specific for use with 10-46T XPLR 13-speed cassette and road Flattop chains* Hangerless Interface and Full Mount attachment allow for the most precise shifting and the ultimate resistance to impact* Requires frame with UDH interface* Simple setup with no adjustment screws* Superior chain management with MTB-inspired spring clutch* Replaceable and rebuildable parts* Magic Wheel keeps the chain moving, even if debris enters the lower pulley* Compatible with existing AXS batteries (battery not included)* SRAM Model ID: RD-RED-1E-E1