I was riding at about 4-5k in third gear and boom speedo down to 0. I pulled in the clutch and when I gave it a little gas the bike shut down and oil light came on. Pulled over put it in neutral. Started back up just fine, then a mile down the road same thing. I believe it was at about the same speed/rpms. Any ideas? It has done this before but now that it has happened again I'm thinking it's not just a hick up and is more serious.