SRAM GX Eagle T-Type XS-1275 Cassette - 12-Speed, 10-52t, For XD Driver, Black/SilverThe GX Eagle T Type 12 Speed Cassette is a key reason why Eagle Transmission offers the best ever inboard and outboard shifting performance under load. Thanks to its full X SYNC design, the harder you pedal, the better it shifts. From its massive 520% gear range, the 52 tooth cog steps down with improved gear progression with 38 and 44 tooth cogs in the low end (compared to the Eagle drivetrain 10 52 tooth cassette) 55mm chainline compatibility for