SRAM Force XPLR AXS E1 is a wireless 1x13-speed gravel groupset built around the Full Mount rear derailleur and a 10-46T XDR cassette. It takes the same gravel-specific architecture as Rival XPLR and adds carbon crank arms, a carbon and aluminium derailleur cage and carbon brake lever blades, saving weight across the build. It is designed for gravel racing, long-distance mixed-surface riding and bikepacking on UDH-equipped frames. Full Mount Rear Derailleur Mounts directly to the frame's UDH interface and centres on the rear axle, with no derailleur hanger to bend or misalign No limit screws or hanger variance - setup is quicker and shifting stays precise Straight cage design keeps the derailleur clear of the wheel under impact or heavy loading Carbon and aluminium cage for strength at low weight Clutch keeps the chain secure and quiet on rough surfaces Replaceable and serviceable parts E1 Levers and Brakes E1 lever shape shared with RED E1, with a sculpted hood and curved carbon lever blade Reduced lever effort makes one-finger braking practical from both the hoods and the drops Stiffer Flat Mount callipers for consistent power and control in all conditions Levers control both shifting and braking, communicating wirelessly with the derailleur Carbon Crankset Carbon Force XPLR arms are significantly lighter than the aluminium Rival equivalent while staying stiff under load Crank boots protect the arm ends from pedal and rock strikes DUB Wide spindle optimises the 1x chainline for the 13-speed cassette on frames with longer chainstays 8-bolt direct mount interface accepts any SRAM AXS chainring, with or without power meter 13-Speed Gravel Gearing XG-1371 10-46T cassette gives a 460% range with close steps where they matter most Single chainring keeps the drivetrain simple, light and secure Force E1 Flattop chain works with both 12-speed road and 13-speed XPLR systems AXS-Enabled Connects to the SRAM AXS app to customise shift behaviour and monitor battery levels across all components Compatibility Frame: UDH (Universal Derailleur Hanger) interface required - not compatible with frames using a conventional derailleur hanger, and no conversion is available Freehub: XDR driver body required Bottom bracket: SRAM DUB, frame-specific (not included) Brakes: Flat Mount callipers; Centre Lock or 6-bolt rotors as appropriate to the wheels Chain: SRAM 12- or 13-speed Flattop road chain only - not compatible with 12-speed Eagle MTB chains Included 1 x pair of SRAM Force eTap AXS E1 shift/hydraulic disc brake levers 2 x SRAM Force Flat Mount disc brake callipers with 20 mm hardware 1 x 1800 mm and 1 x 950 mm hydraulic hoses (pre-connected to levers and callipers) 1 x SRAM Force XPLR E1 DUB Wide 42T 1x crankset 1 x SRAM Force E1 Flattop chain, 126 links, PowerLock connector, 12/13-speed 1 x SRAM Force XPLR XG-1371 E1 XDR cassette, 13-speed, 10-46T 1 x SRAM Force XPLR AXS E1 rear derailleur, 13-speed, 46T maximum sprocket 1 x SRAM eTap AXS battery for the rear derailleur 1 x SRAM eTap/AXS battery charger and cable Not Included / Required Separately Bottom bracket Disc brake rotors (SRAM Paceline Centre Lock rotors available as an option; lockrings not included) UDH-equipped frame and XDR freehub body Specifications Specification Detail Groupset SRAM Force XPLR AXS E1 Drivetrain 1x13-speed, wireless electronic Discipline Gravel Rear Derailleur Mount Full Mount (UDH frames only) Derailleur Cage Carbon / aluminium Cassette XG-1371, 10-46T, 460% range Freehub Standard XDR Crank Arm Material Carbon Chainring 42T, 8-bolt direct mount Spindle DUB Wide Chainline 47.5 mm Chain Force E1 Flattop, 126 links, PowerLock Brakes Hydraulic disc, Flat Mount callipers Hose Lengths 950 mm (front), 1800 mm (rear) App Connectivity SRAM AXS Force XPLR gives the 13-speed Full Mount platform a lighter, carbon-led build without stepping up to RED.