New shifting characteristics improve both, inboard and outboard shifting, as well as chain retention This cassette matches up perfectly in performance and color to X01 Eagle AXS� enabled componentry X-Dome architecture, which, independent tests have concluded, yields the strongest cassettes on the market XD driver body compatible 10-50t 12sp 10,12,14,16,18,21,24,28,32,36,42,50 Grey