Aero tubes didn’t find their way into the Urgestalt’s potpourri of tube shapes that range from the top tube and downtube’s square profiles that go from square at the head tube junction and transition into rounded tubes by the time they intersect the seat tube. Brutishly large-diameter chainstays are used where they intersect the bottom bracket and taper down as they move toward the full-carbon dropouts. In an attempt to counteract some of the rigid frame features, Lightweight uses their own 27.2mm diameter seatpost that has a slight oval profile. The post will accommodate both Mono Link saddles and traditional rails. A nifty and effective seatpost-clamp mechanism is hidden away on the under side of the top tube, with only a 4mm hex head visible to the eye.