Built to last and designed to be rebuilt, the wide-range PG-1210, 11-50t Eagle cassette is ready for any terrain you throw at it. Its splined driver body compatibility makes it a natural fit with a broad range of wheel manufacturers, and the swappable E-MTB "speed limit" gears mean you can keep your drivetrain running longer without replacing the whole cassette. Features Common E-MTB “speed limit” gears (11t-13t-15t) cogs are replaceable Splined driver body compatibility Specs Model ID: CS-PG-1210-B1 Range: 11-50t Speed: 12-Speed Cog Sizes: 11,13,15,17,19,22,25,28,32,36,42,50t Drivetrain Config: 1x Freehub Interface: Splined (Shimano HG) Compatibility SRAM Eagle S-Series, including the S100, S200, and S500, are built to work seamlessly with previous generation SRAM Eagle 12-speed components (SX, NX, GX, X01, XX1), offering backward compatibility with your existing drivetrain S-Series components are not compatible with SRAM Transmission (T-Type) The PG-1210 Cassette is only compatible with Shimano HG (splined) Freehubs