Seat concepts no longer do a higher than stock seat. I don't know why because the stock seat on a KLX is pretty low for an average human. That was my major issue because I'm 6'0" and my knees were really cramped and sore along with my ***. $250 for a custom seat from Mr. Eds Moto https://www.mredsmoto.com/ made a huge difference with a 2" rise, widened it, and moved in back a bit. Here's what I got.

 

wow that's big. i'm 6'3 ish and don't really have any issues