The Last "ke" engine numbers were in '99
USUALLY the engine is serial numbered same as Frame,or very close.
Most of the time it's the same.
The actual Serial Number part of engine or frame number is the Last 5 characters.
24889 in your case.
That means your engine was the 24,889th ENGINE Produced.
The Bike's VIN number would Typically carry Same Number
If we use that same number in the VIN Number/Frame Number...
Then it comes out in the Range of 1997Models
1998 began at #27,001
1997 began at #20,001
1996 began at #14,001
Your number is well-enough "centered " in 1997 Range between 20,001 to 27,000
Fairly Safe GUESS that it's a 1997 KX250
You should be able to find VIN "frame number" located here
http://www.buykawasaki.com/SITE/images/I...