This exceptional cassette is crucial to the unparalleled inboard and outboard shifting performance of the Eagle Transmission system, particularly under heavy load. The GX Eagle Transmission cassette employs a full X-SYNC design, ensuring that the harder you pedal, the smoother and more precise the shifting becomes. With a chainline of 55mm, this cassette reduces extreme chain angles throughout its entire range, resulting in improved precision and extended chain durability. The optimized 520% gear range of the GX Eagle Transmission cassette introduces larger 38 and 44-teeth cogs before the 52-tooth cog, enhancing the gear steps in the low-end range. This configuration offers superior performance compared to the Eagle drivetrain's 10-52-tooth cassette. For effortless installation, the cassette is equipped with a clearly marked Setup Cog, making the setup process simple and foolproof. The GX Eagle Transmission cassette utilizes a combination of Pindome design for gears 1-8 and a single-piece mini-cluster for gears 9-12. This innovative construction ensures optimal gear engagement, durability, and smooth shifting performance throughout the cassette. Details Speed: 12s T-Type Gearing: 10-52t Cog Finish: Black, Silver Technology: XS Cog Sizes: 10-52t:10,12,14,16,18,21,24,28,32,38,44,52 Weight: 444 g SRAM Eagle Transmission AXS Compatibility: The SRAM GX Eagle Transmission AXS Cassette is compatible with the following: Frameset: Any frame that fulfills the “UDH Specification” featuring a hanger-less interface can be upgraded. The SRAM UDH Bike Finder lists all UDH bikes that are compatible with Eagle Transmission. Battery: SRAM AXS Battery Bottom Bracket: SRAM DUB "Wide": BSA73 , PF89.5 , PF92 , PF30 MTB73 , BB30 MTB73 , BSA MTB68SP Chain: XX SL , XX , X0 or GX Eagle Transmission chains Chainring: XX SL , XX , X0 or GX Eagle Transmission chainring Cassette: XX SL , XX , X0 or GX Eagle Transmission cassette Controller: AXS POD Controller , AXS Pod Ultimate Controller Crankset: XX SL , XX , X0 or GX Eagle Transmission cranksets Freehub: SRAM XD compatible freehubs PowerLock: Eagle Transmission PowerLocks only Rear Derailleur: XX SL , XX , X0 or GX Eagle Transmission rear derailleur SRAM Eagle Transmission is not compatible with previous-generation Eagle components. However, Eagle Transmission T-Type chainrings are backward compatible with Eagle chains, so they can be used on the current Eagle drivetrains. Non-T-Type Eagle chainrings will not work with Eagle Transmission chains.