In this video, Simon von Bromley explains all you need to know about the blue Shimano road bikes you see at pro bike races.We got up-close with a Shimano Neutral Service bike at this years Tour de France and in the video Simon uncovers what bike model it really is, why it has a dropper post and what it weighs.Simon also explains why, despite its top Shimano Dura-Ace groupset, no pro wants to ride one of these bikes, except in an emergency. Read our in-depth bike check: Shimano's neutral service bike has a ten-year-old frame and a dropper post