Dallas was lead by goals from Marco Ortiz, Alessandro Mion, Victor Portillo, and Diego De La Tejera Farias.
Kansas City was able to pull two back late in the game after Dallas had a convincing 4-0 lead when Wes White scored the Sporks only two goals.
Dallas sits atop Group B with an edge in goal differential over the Philadelphia Union, who beat the Seattle Sounders 1-0 Monday night. Dallas will face Philadelphia at 8:15 p.m. on Tuesday night at Pizza Hut Park on Field 7.
FCD - Ortiz 8'
FCD - Mion 23'
FCD - Portillo 25'
FCD - De La Tejera Farias 59'
SKC - White 73'
SKC - White 77'
FC Dallas U-17 lineup: Gonzalez, Laverde, Mion, Ashby (Haberkorn 50'), Frankenfeld, Acosta (Reeves 65'), De La Tejera Farias (Abdulranhman 70'), Meyer, Ortiz (Parthain 58'), Koroma (Galvan 70'), Portillo (Edet 65')