The warning reflects the threat posed by four named props: Naufahu Whyte, captain James Fisher-Harris, Moses Leota and Joseph Tapine.
NRL premiership-winning coach Shane Flanagan believes the quartet may together make up the best collection of props in the country's history.
The Kangaroos have been warned to expect this formidable Kiwis forward pack when the sides meet in Sydney on Thursday night.
"There's no stronger forward pack," Flanagan said last week on The Bye Round podcast.