Mechanical shifting at it’s best. Eagle 90 delivers the dream, and then some. Featuring the same Full Mount derailleur architecture as it’s AXS Transmission siblings, it is unquestionably robust. Kit Includes: Eagle 90 DUB crankset Eagle 90 T-Type Actuation mechanical shifter GX Eagle XS-1275 T-Type Cassette Eagle 90 T-type rear derailleur GX Eagle T-Type 126 Link 12-Speed Flattop Chain Sleek and sturdy forged aluminum Eagle 90 DUB crankset, with a signature silver T-Type chainring equipped with removable bash guards Premium double-click Eagle 90 T-Type Actuation mechanical shifter is built with modern shift ergonomics and a premium textured aluminum lever touchpoint GX Eagle XS-1275 T-Type Cassette features 10-52t range and full X-SYNC technology for best inboard and outboard shifting performance under load Eagle 90 T-type rear derailleur features the revolutionary Hangerless Interface and Full Mount attachment method that creates a far stronger connection because it grips both sides of the frame (Requires frame with UDH interface) Full Mount Eagle 90 derailleur is the most rebuildable Eagle Transmission derailleur, with replaceable B-Knuckle, Inner/Outer Links, Bash Guards, Bushings, Cage, and Cage Assembly Includes the proven and reliable GX Eagle Transmission Flattop chain