2PCS 12T GX Rear Derailleur Pulley Wheel Sealed Bearing Jockey Roller 11v For SRAM GX FORCE RIVAL 11 Speed Middle long cage

2PCS 12T GX Rear Derailleur Pulley Wheel Sealed Bearing Jockey Roller 11v For SRAM GX FORCE RIVAL 11 Speed Middle long cage

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