A great all-arounder trail sock

See the link under the Links & More Info tab to purchase these (the small silver parts) if you don't already have them

In conditions where other derailleurs need adjustment and maintenance

with good visibility even in the dark

SRAM eTap Battery For AXS Derailleur - Dropper Out of Stock A great all-arounder trail sockThe SRAM battery is the power source for eTap or AXS components. The same power unit is interchangeable between front and rear eTap AXS derailleurs, Eagle AXS derailleurs, and the RockShox Reverb AXS Seatpost. Who's this item for: Made for riders running AXS or Red components looking for a spare battery to keep their parts moving like new. Charge time: Charges in 60min or less. Weight: 24g. Compatibility: Works for all AXS components and Sram RED ETap.