Bike Stalls and won't immediately restart
 

Stumped…. Please Help!!!
I have a 1989 Sportster Deluxe 883 that has been shutting off on me. It has happened 4 times in the past 2 months and so far nobody can figure out why. The Coil, plugs, & wires were changed and the petcock recently cleaned.
All 4 times have occurred within 10 minutes of my starting point and at speeds less than 25 mph. The bike just stalls and won’t restart. All of the lights are on and it tries to start but won’t kick over. Then after a while it starts up like nothing ever happened…