SRAM GX Eagle XG-1275 T-Type 12 Speed 10-52T XD Cassette - 12 Speed - XD Driver - 10-52T - SilverThe GX Eagle Transmission (T Type) 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. Designed for a 55mm chainline for less extreme chain angles throughout the full range and delivers more precision. Its 520% range has been optimized with larger 38 and 44 teeth cogs prior to the 52 tooth cog for