A motorcyclist was killed when he slammed into a dump truck in the Bronx, cops said.

The unidentified man was driving a Honda CR80 motorcycle south on Boston Road around 10:20 p.m. Sunday when he struck the passenger side of a 2019 International dump truck heading in the same direction as it attempted to turn onto eastbound Waring Avenue, police said.

Cops found the man unconscious and unresponsive in the street with trauma to his head.

He was pronounced dead by EMS.

The 27-year-old truck driver stayed on the scene, according to police.

The NYPD’s Highway Collision Investigation Squad is probing the crash.