Indeed it is Redbull. They used to have a little gathering called "The Old Hwy. 40 Motorcycle Days" and close that road for the weekend for TT's. The picture above was my ninth and final run of the weekend. Managed third place with a previous run in Open Twins despite the get-off.
Really a neat event. They had Supermoto races, hill climbing and some MX too. All kinds of bikes, a few karts and some midget cars did the TT.