A pair of white teens were arrested for throwing a banana and shouting racial slurs at a black teenager before pummeling him with their pals inside a Brooklyn subway station Monday morning, police said.

The 16-year-old boy was walking inside the Coney Island-Stillwell Avenue station when a group of nine teens attacked him during a hate-filled robbery around 8 a.m., according to sources and cops. 

The crazed white mob chucked a banana at him, called him the N-word and then kicked and punched him before snatching one of his shoes on the mezzanine level inside the station, cops said. 

The teen refused medical attention at the scene but later went to NYC Health + Hospitals/South Brooklyn Health for head injuries. 

The sickening assault was posted on Instagram and briefly went viral before it was taken down, sources said.   

Charges against the two teens — a 14-year-old boy and a 16-year-old boy — were pending Wednesday night.

The other assailants, believed to be all teenage boys, have yet to be caught. 

The NYPD Hate Crimes Task Force is investigating the incident.