The German was highly-tipped to fill the vacant berth at Aprilia following the announcement he had left Forward Racing by mutual consent in the wake of the team's decision to skip the upcoming Indianapolis round.
This has now been confirmed, with Bradl coming on board as the full-time replacement for Marco Melandri, who split with the Gresini Racing-run squad eight races into the season following a run of poor performances.
Paired with former satellite Honda rival Alvaro Bautista, Bradl's move to the factory Aprilia team will be seen as a chance for the ex-LCR rider to also improve his fortunes having struggled for consistent form on the Forward Yamaha in 2015.
Bradl became available after Forward Racing was forced to miss the next race in the United States as a reaction to team owner Giovanni Cuzari being arrested in Sw itzerland over alleged tax evasion. Though the team insists it will be present at the following Brno round, it hasn't been enough to convince Bradl to stay.
It is not yet known whether Loris Baz remains committed to the team. Aprilia test rider Michael Laverty substituted for the departed Melandri in Germany.