Ken Block will compete in all 12 rounds of the 2016 World Rallycross Championship, the series announced on Wednesday.
The American has made sporadic outings in World Rallycross over the past two years, having made his debut in the championship in 2014.
Now Block is aiming to win the title thanks to an extended factory partnership with Ford Performance.
He will compete with his usual Ford Fiesta ST car.
"I'm stoked to be able to compete for an FIA World Rallycross title," said Block.
"I've really enjoyed my past six years racing with Ford and to renew my relationship with them moving forward, as well as receiving an increased level of involvement from Ford Performance, to compete for a World Rallycross Championship, well, I couldn't be happier."
He added: "For a big portion of my career I've maintained a mixed focus and kept a diverse race calendar, but now I'll be focusing myself fully on one single championship.
"I've been stoked with what my team and I have accomplished so far with my Ford Fiesta ST racecars and I'm excited to see what we'll be able to do next season with factory support. It's going to be a very exciting 2016 and I can't wait to get started."
The World Rallycross season kicks off in Montalegre, Portugal on 16-17 April.