Originally Posted by Trocadile

Do you mean for the seat stays (that don't end at the seat tube)? The frame is almost identical to the Tyrell PKZ mini velo (Products | Tyrell Bike | ******************************???TYRELL********************? ??? **********?). I don't know what the arrangement is (if any) between Titan and Tyrell, by the way. In any case, according to the Tyrell description, in classic Japanese to English translation, "the unique shape titanium yoke placed on the seat stay attenuates the vibration from the rear wheel moderately. It produces a soft tail effect and you can enjoy a unique riding feeling."

For what it's worth, the bike does have an unusually smooth ride for a small-wheel bike - noticeably smoother than my similarly setup Swift in spite of using skinnier tires.