Red Bull hope they have enough engine components to avoid further penalties between now and the end of this season.
Despite their lowly starts, Verstappen raced to fifth on the day while Ricciardo was sixth.
This weekend at Suzuka both drivers will be racing the Renault’s upgraded C-spec engine, reverting to the power unit having swapped back to the B-spec at Sochi.
Horner hopes this means they will be able to see out the season without further penalties.
“We’ve now got two engines available to us between now and the end of the year,” the team boss explained to Sky F1.
“This will be the engine used in Mexico and we’ll run the C-spec in Japan. So hopefully we have enough components to get penalty-free to the end of the year with the last five races.
“We have proved to be more competitive [in Sochi] than we expected, let’s see in Japan. Austin… in race pace we can be strong at pretty much all the circuits, obviously qualifying is our Achilles’ heel.”