But, I feel like the best of budget and strength would be Yosimura risers
https://www.revzilla.com/motorcycle/...saAnqCEALw_wcB
Only two positions options, but got to be the stongest way to get your pegs up and back! (other than making your own out of unobtainium...or...like...steel)
I'll report back with findings on these and other options (I'll try to find those posts of what-mods-if-any need to be made to retrofit new-gen 250/ninja 300 rearset and rearset accessories)