The Unknown Singularity frameset is built around a 6066-T6 aluminium frame with an aero seat tube, for your own fixed gear or single speed build. The aero seat tube takes the model-specific Unknown aero seatposts.
The sizes you can order are shown in the size selector. If you are unsure which size to choose or what is included, contact us before ordering.
Looking for a complete bike instead? See the Singularity collection.