Bike stalls at 50 MPH

[7653]

I use my bike to commute in a big city and usually stay off freeways. The highest speed I will go is usually 40MPH. However, today I decided to take it on a short ride through the interstate going through my city. After riding my bike for several minutes at 50MPH it stalled in the middle of my ride. I eventually fired up my bike again but after about ten minutes of riding it stalled again at around 35MPH. The engine just went silent. Headlights and everything else were still functional.

What is the issue? How can I fix it?

I looked up several related forum topics:
-2003 gz250 stalls at highway speeds
viewtopic.php?f=3&t=3484

-higher speed "stall"
viewtopic.php?f=7&t=2480

Thank you!