It happened at the intersection of Marcy Avenue and Walton Street in Williamsburg around 6:45 p.m.
The kids, who were both on the same bicycle, were hit by a van which witnesses said had the right of way. There is a traffic light at the intersection.
Haztolah EMS transported the kids to Bellevue Hospital. One has a broken leg. The other hit his head and is OK.
No charges are expected to be filed.