The Q's with the insert's should work quite well .
Then remove the insert for shenanigans ,
I don't remember which FMF I had on the KLR first and returned but i was a little barky.
It had the silver sticker the Q's have the black sticker ......
Are the KTM sport can's that much longer ?
The Akarpovic's .....FMF also sells Adventure specific cans maybe they are longer ?