I was running and gunning, over taking 3 quads on the left side - missed the shift (4th to 5th) - over-revved - "huge" back fire! - The beast starts running like its choking on something. Did a U-turn and rode back to the truck (about 4 miles), coughing and weezing all the way. All I'm thinking is "Please make it back!, Please make it back!......" - Made it to the truck. Took her home, broke her down, found this (photo).
There's nothing like a KX500! - Even when you screw up, it'll still get you home!