Hardtail steel, with 120mm of suspension. A touch of titanium, my first. Some carbon, when and where necessary to achieve big things, without gaining weight. Still sitting on leather, so don’t cry about the carbon. Still shifting with the thumb, but now it clicks when I push the lever. The 2.4″s are in the mail. So is the rear rim, one of the only genuine tubeless-ready 35mm rims available.