Dogma X — Dura-Ace Di2 / Princeton Grit 4540

The Dogma X uses the same Torayca T1100 1K fibre as the Dogma F and spends it differently. Where the F is built around a position held for four hours, the X is built around a position held for eight, and the rear triangle is where that decision is visible.

The X-Stays keep the seatstays separate rather than merging them into a wishbone. They split near the seat tube and fix at four distinct points on the frame, with an X-shaped bridge spanning them for torsional continuity. The arrangement preserves lateral stiffness under load while giving the rear end a longer path to absorb road input, and the stays measure 422 mm, 14 mm longer than the Dogma F's. Longer stays also move the rear wheel further from the seat tube, which is what opens the tyre clearance to 35 mm.

The front end keeps the Onda fork family and the integrated cockpit, with a taller stack than the F for the same nominal size. The reference build is 6.98 kg without pedals, on Dura-Ace Di2 R9200 and the Princeton Grit 4540, a wheelset specified for wider tyres and rougher surfaces rather than for a 25 mm racing tyre.