X01 Eagle AXS Rear Derailleur Options:X01 Eagle AXS Rear Derailleur - 12-Speed, Long Cage, 52t Max, Battery Sold Separate, Lunar Thermal yarns feature a brushed

Thermal yarns feature a brushed fleece interior that insulates

Rubber seal located on the bearing's external side helps to reduce the risk of water penetration

Our Powerline™ carbon outsole—our lightest and stiffest outsole ever—creates the ideal platform for power delivery

The updated derailment angle on the non-contact side further enhances shifting efficiency

X01 Eagle AXS Rear Derailleur Options:X01 Eagle AXS Rear Derailleur - 12-Speed, Long Cage, 52t Max, Battery Sold Separate, Lunar Thermal yarns feature a brushedThe SRAM X01 Eagle AXS 12 speed rear derailleur is specifically designed and optimized to be motor driven instead of cable actuated to operate with other Eagle AXS components. Designed for a max 52t large cog