Cardi B's involvement was made official on Tuesday as Diesel uploaded a video himself sitting next to the rapper on the set of the action sequel.
"Day 86 here on the set of Fast 9. I know I'm exhausted," Diesel says in the clip with Cardi B smiling behind him. "We gave every single thing we could for this movie, put it all on the table, put it all out there."
"I'm tired but I can't wait. I ain't gonna front, this is gonna be the best one," Cardi B added.
Cardi B joins a cast that also includes returning Fast & Furious stars Michelle Rodriguez, Jordana Brewster, Ludacris, Tyrese Gibson, Charlize Theron, Helen Mirren and series newcomers John Cena and Michael Rooker.
Filmmaker Justin Lin, who has helmed four other Fast & Furious installments, is directing based off a script by Dan Casey.