You can find all the parts and accessories you need at Escapa.
Such as the BMC MSM01 stem used on the Fourstroke 01, Agonist 01, Speedfox, and Twostroke 01 (2022) models
Features:
Diameter: 31.8 mm
Material: Aluminum
Angle: 5
Headset tube diameter: 1 1/8"
Used on: Fourstroke 01, Agonist 01, Speedfox, Twostroke 01
Model year: 2022