The NYPD will soon allow officers to handcuff criminal suspects with their hands in front instead of behind their backs as part of the use-of-force overhaul — a change one police source called “total lunacy.”

“They want to say they’re a kinder, gentler police force by coming up with a new policy on front-cuffing. But it invites danger,” the source said.

NYPD spokesman Stephen Davis told The New York Post that the change — which will go into effect Jan. 1 — was part of the revision of the Patrol Guide regarding use of force.

He said suspects with “medical or physical hardships” would be candidates for front cuffing, but it would be the arresting officer’s decision.

“If someone’s in good enough shape to fight, that’s a person who wouldn’t be a candidate for front-cuffing,” he said.