Dual wheel capabilities (650 and 700) Rack and fender eyelets. Flat mount brakes front and rear 31.6 Seatpost Headtube I-D 44mm 12×100 Front axle 12×142 Rear axle Pressfit BB30 Bottom Bracket Year: 2019 Build: Frame for Custom Build. Sizes: LargeMediumMedium-Large