29er, Boost spacing, for tapered headset, size small, tapered cane creek headset is not pictured but it's included. Frame has semi round back, it feels like it has short rear suspension, at least it rides much softer on the bumps and gravel than other hardtail bikes I have.
Complete bike with top of the line components, Hope Tech brakes and carbon wheelset is also for sale, see last image for reference. This listing is for frame + headset only.