The new Specialized Tarmac uses a proprietary D-shaped seat post (the previous-generation SL5 Tarmac used a round 27.2mm post). The proprietary post means riders can’t just grab an off-the-shelf post to address fitting needs. Specialized has addressed this by making a zero-offset posts.
Some of Team Sky’s bicycles were equipped with a new K-Edge Garmin mount that cleanly mounts to the Team’s PRO Vibe stems.
Cannondale-Drapac’s mechanics excised the shifter buttons from a Shimano Dura-Ace Di2 TT/Triathlon Dual Control lever and glued them to the side of a TRP brake lever.