Sram XX1 Eagle XG-1299 12-speed Cassette
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|Number of gears||12-speed|
|Suitable for||Sram XD|
|Cassette ratio||10 / 50|
The Sram XX1 Eagle XG-1299 12-speed cassette is identical to the 11-speed cassette, but adds the functionality of a 50T cog. The build-up is now: 10t, 12t, 14t, 16t, 18t, 21t, 24t, 28t, 32t, 36t, 42t, 50t. Only the biggest cog has been made using aluminium, the rest has been CNC machined and milled from a single piece of steel.
The 12-speed cassette fits the existing XD drive, meaning the space between the cogs has been decreased, requiring a narrower chain. X-Glide 2 is the latest generation of the Sram X-Glide technology, optimised for the Eagle 12-speed cassette. It provides quick and precise gear shifts under heavy load across the range, and increases the grip of the chain on the larger cogs.