Ok Joe. I just did a clearance measurement giving a 1.75” protrude of the vent. To get that much clearance DOWN, you have to mount the BOTTOM of the vent 11.5” from the top of a stock sheild. In the DOWN position, your field of view is fine. When the bring it UP, the vent will Be Center view and block your view of items 8- 14ft in front of the bike while seated and for OUR height. Not acceptable in my book.