If you want the best ever shifting performance under load, then look no further than the GX Eagle T-Type Cassette from SRAM. The full X-Sync technology means that the harder you pedal the better it shifts.520% range 10-52t. Full X-SYNC for best-ever inboard and outboard shifting performance under load. Optimised gear steps on low end.55mm chain line compatibility for more moderate chain angle, longer wear and greater precision. Setup Cog for simple set up.Features a combination Pindome and MINI-CLUSTER designDesigned for a 55mm chain line for less extreme chain angles throughout the full range and delivers more precision. It s 520% range has been optimized with larger 38 and 44-teeth cogs prior to the 52-tooth cog for improved gear steps in the low end (compared to the Eagle drivetrain 10-52-tooth cassette). Featuring a clearly marked Setup Cog, install is both simple and fool proof. Plus, it utilises a Pindome design for gears 1-8 and a single piece mini-cluster for gears 9-12.Speci