SRAM Eagle AXS Rear Derailleur Cage Replacement Guide

By fullertonbicycle | Published: 2026-11-04

Category: Gör-det-själv-guider

Learn how to replace a bent or worn inner cage on your SRAM Eagle T-Type AXS rear derailleur with our step-by-step guide, including key checkpoints and common mistakes.

Quick answer

To replace the inner cage on a SRAM Eagle T-Type AXS rear derailleur, remove the two T25 pulley bolts, detach the old cage, and install the new one using the supplied stainless steel bolts. Work on a clean bench and check pulley orientation before tightening.

When a cage swap makes sense

A bent or worn inner cage can cause poor shifting, chain drops, or pulley misalignment. If the derailleur body and electronics are intact, replacing just the inner cage is a cost-effective fix. However, if the outer cage or parallelogram is damaged, a full derailleur replacement may be necessary. Also note that SRAM T-Type cages are specific to T-Type derailleurs; they won't fit older Eagle AXS models.

Tools and parts you'll need

Gather a T25 Torx wrench, a clean work area, and the replacement inner cage. The SRAM Eagle T-Type AXS Rear Derailleur Inner Cage includes two T25 stainless steel pulley bolts. You'll also need a chain tool if you plan to remove the chain for easier access, though it's not always required.

Step-by-step cage replacement

Remove the chain: If your chain has a master link, open it to free the chain from the derailleur. Otherwise, shift to the smallest cog and smallest chainring to create slack, then detach the chain from the pulleys. Checkpoint: Support the derailleur to prevent it from snapping back and damaging the cage.
Remove the pulley bolts: Using a T25 Torx wrench, loosen and remove the two bolts that secure the pulleys to the inner cage. Keep the pulleys and any spacers in order for reassembly. Common mistake: Forgetting which pulley goes where—label them if needed.
Detach the inner cage: Gently pull the inner cage away from the outer cage. It may be held by a pin or clip; consult your derailleur's service manual for specific disassembly if resistance is felt. Checkpoint: Do not force the cage; if it won't separate, double-check for hidden fasteners.
Install the new inner cage: Position the new inner cage onto the outer cage, aligning the pulley mounting holes. Insert the two supplied T25 stainless steel bolts through the pulleys and cage, then tighten snugly. Common mistake: Over-tightening the bolts can crush the cage—tighten until just snug.
Reinstall the chain: Route the chain through the pulleys correctly (following the derailleur's markings) and reconnect the master link or re-pin the chain. Checkpoint: Ensure the chain runs smoothly through the pulleys without binding.
Check alignment and shifting: Spin the cranks and shift through the gears to verify smooth operation. Adjust indexing if necessary. Common mistake: Skipping the test ride—always test under load before heading out.

Product facts

Eagle T-Type AXS Rear Derailleur Inner Cage: SRAM Eagle replacement inner cages for T-Type rear derailleurs, compatible with SRAM RD-GX-E-B1 T-Type rear derailleurs, includes (2) T25 stainless steel pulley bolts. This cage is a direct replacement for T-Type derailleurs and comes with the correct bolts, so you can complete the swap without sourcing extra hardware.
Eagle T-Type AXS Rear Derailleur Inner Cage