Build it your way. The Sum frameset gives you Argon 18's lightweight road platform — planted and responsive, with a ride quality most aero frames can't match — ready for the build of your choice.Key features Elite Level Layup carbon Hourglass-shaped headtube and draft-deflecting fork blades Aero-profile downtube shaping D-shaped seatpost with integrated clamp 3D System for fit adjustability Topological Compliance System (TCS) Argon Fit System — size-specific geometry Frame Layup Elite Level Layup carbon Fork Carbon, draft-deflecting blades Seatpost D-shaped with integrated clamp Geometry Road Race Geometry BuildsFrameset — £1,750All sizes: XXS (44-46), XS (47-50), S (51-53), M (54-56), L (57-59), XL (60-62).Frameset contents: Argon 18 do not publish a full frameset inclusions list on their GB site. Please confirm exact package contents with us before ordering.