Kyle Busch, who passed away at 41 due to pneumonia and sepsis, was not in good form, according to Brad Keselowski.

Busch, a two-time NASCAR Cup Series champion considered one of the best drivers of all time, died Thursday at the age of 41.

El piloto estadounidense se descompensó durante una prueba en el simulador de Chevrolet.

Kyle Busch, who passed away at 41 due to pneumonia and sepsis, was not in good form, according to Brad Keselowski.

Kyle Busch, 41, died on May 21 after being rushed to the hospital when he was found unresponsive inside a race simulator near Charlotte, North Carolina.

Kyle Busch’s pneumonia worsened into sepsis, causing severe complications and hemorrhagic shock after a medical emergency before his death.

Kyle Busch's death certificate reveals new details about the sudden passing of the NASCAR icon.

Busch's death left the NASCAR world grieving the loss of one of the sport's all-time greats, just days after he won his final race.

Kyle Busch died suddenly on May 21. What we know about his death at just 41 years old.