A dumb stunt killed two motorcyclists in Brooklyn early yesterday, police said.

A 45-year-old biker performing a wheelie smashed into a 22-year-old biker stopped at a red light at Halsey Street and Wilson Avenue in Bushwick at 3:20 a.m.

The 22-year-old rider was declared dead at Wyckoff Hospital, and the 45-year-old rider was declared dead at Kings County Hospital.

The motorcyclists’ names were not released.

The two dead men were among several motorcyclists at the intersection at the time, said witnesses.