Whether for the build of their dreams or getting the bike ready for the next race season the XG-1299 cassette gives riders a 520% range and a unique finish. Stronger racers are now free to choose larger chainrings for more top-end speed without sacrificing climbing range. More time is spent higher up in the cassette where athletes power transfer is most efficient and wear is minimized. Featuring X-Dome architecture and proven XD driver body it&&';;s also backwards compatible to give riders even more Eagle upgrade options for their current bikes.XG-1299 Eagle 10-52t cassette provides riders with a broad 520% rangeFeatures X-Dome architecture high-performance cassette technology that features a hollow CNC-machined single block of steel that creates a lightweight stiff and durable drivetrain componentX-Dome structure excels at mud clearance and provides precise shiftingProven XD driver interface TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Range 10-52 Cogs 10-12-14-16-18-21-24-28-32-36-42-52 Cassette Body Type SRAM XD Drivetrain Speeds 12 Color Gold Defined Color Gold