The 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 44 and 38 tooth cogs in the low end (compared to the Eagle drivetrain 10-52-tooth cassette) 55mm chainline compatibility for more moderate chain angle, longer wear and greater precision Featuring a clearly marked Setup Cog, install is both simple and fool-proof Utilizes a Pindome design for gears 1-8 and a single piece mini-cluster for gears 9-12 Nickel plating delivers top-tier durability as well as a quiet shift experience Compatible with the well accepted and broadly available XD driver body Cassette Body Type: SRAM XD 11/12 Speed Designed for ebike: Yes Drivetrain Speeds: 12 Cassette Cogs: 10-12-14-16-18-21-24-28-32-38-44-52 Range: 10-52T Weight: 445g.