The next step in Tramnitz's young career will be to make the leap up into F3, where he has already completed four days of testing for the Dutch team MP Motorsport.
"Being part of the Red Bull junior team opens up completely new opportunities for me," Tramnitz said on his promotion to the team.
"Recently we didn't know whether we could even take the next step towards Formula 3. Now I'm really looking forward to the new challenge."
Red Bull have their eyes firmly set on the future, with Sergio Perez's current contract coming to an end next season, and Verstappen's long-term future in the sport being called into some doubt recently.
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