Catena Sram XX1 Eagle Copper 12v Variant:126 links Our warmest baselayer with a

Our warmest baselayer with a seamless built-in neck warmer

If your heart rate remains high while at rest

Upper: shiny microfiber + side holes for increased ventilation

An open design similar to the Sram X-Dome cassette facilitates mud removal for greater precision and improved durability

The Orbit chain management technology keeps the drivetrain quiet and secure

Catena Sram XX1 Eagle Copper 12v Variant:126 links Our warmest baselayer with aThe most robust system is the one without weak links. Eagle links have a regular profile, without edges or bevels, which drastically reduces noise, friction, and wear. This design also allows for flatter links, resulting in a more stable rivet connection and greater strength. All these elements contribute to the effectiveness, durability, and quietness qualities that characterize Eagle along with the 10 50 cassette and X SYNC2 chainrings. Installation