you negate the suspension by hanging the extra Mass on the fork anyhow ..


of course which fork ?


Tubus made a great Rack, the Swing, but was unable to make it a Plug and play with all the fork crown variations, so Quit.

it left the fork itself free to move placing the load on the fork crown and braced above top headset race.



you could replace the Suspension fork and then you can use most-any rack on the suspension corrected rigid long blade fork
keeps the steering geometry as designed.


Lots better actually if the Sus-fork is low end and lacks a lockout.