An off-duty NYPD cop — with the emergency lights and sirens on his personal SUV blaring — rear-ended a driver in Brooklyn before beating the man in the face with a pair of handcuffs, officials said.

Police officer Michael Baror, 24, was driving his 2016 Jeep Cherokee when he hit the other vehicle from behind at the corner of Avenue N and Bedford Avenue in Midwood around 10:40 p.m. Monday, court documents show.

The hot-tempered cop then got out of his SUV and started arguing with the 28-year-old man before pulling out his gun and waving it at the man and a woman who was with him.

The cop pushed both the man and woman before using a pair of silver handcuffs to repeatedly strike the man in the face.

“Don’t you know who I am? I’m NYPD!” Baror allegedly shouted before getting back in his Jeep and speeding away.

The injured man followed the officer for a while before calling police and going to Methodist Hospital, where he needed ten stitches in his lip.

Cops viewed video of the incident and observed the officer fleeing the scene with his lights and sirens blaring while running several red lights and traveling into oncoming traffic, the documents show.

Baror was arrested Tuesday and charged with assault, improper use of a siren, leaving the scene of an incident without reporting, menacing, criminal possession of a weapon, harassment and reckless driving, the records show.

His bail was set at $15,000 and he has been suspended without pay, officials said.