SRAM GX Eagle Transmission T-Type CS-XS-1275-A1 12-speed Cassette, XD

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  • Regular price $271.95

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The SRAM GX Eagle Transmission T-Type CS-XS-1275-A1 12-speed cassette is a pivotal component in the Eagle Transmission system, setting new standards for shifting performance both inboard and outboard under load. Its comprehensive X-SYNC design ensures that the more you exert force on the pedals, the smoother and more responsive the shifting becomes. This cassette is engineered with a 55mm chainline, reducing the severity of chain angles across the entire gear range, thereby enhancing precision. With a 520% gear range that includes optimized larger 38 and 44-teeth cogs before the final 52-tooth cog, it offers refined gear steps in the lower range, improving upon the previous Eagle drivetrain's 10-52-tooth cassette configuration. The inclusion of a clearly marked Setup Cog simplifies and ensures error-free installation. Moreover, the cassette features a Pindome design for the first eight gears and a single-piece mini-cluster for the ninth to twelfth gears, marrying durability with seamless gear transitions.


  • 520% range. Full X-SYNC for best-ever inboard and outboard shifting performance under load. Optimized gear steps on low end.
  • 55mm chainline compatibility for more moderate chain angle, longer wear and greater precision. Setup Cog for simple set up.
  • Features a combination Pindome and MINI-CLUSTER design


SPEED (CS) 12s T-Type
COG SIZES 10-52t:10,12,14,16,18,21,24,28,32,38,44,52
WEIGHT (G) 445g

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For useĀ withĀ SRAMĀ XD freehub bodiesĀ 

Cassette NOTĀ compatibleĀ with: standard HG (8,9,10 or 11 speed) or MICRO SPLINE freehubs
Confused?Ā Drop us a lineĀ before ordering!