As a wild guess, and I don't know if this would work, but the Duke or Supermoto KTMs may well be lower. So if lowering is a matter of fitting a different link in the rear suspension and moving the forks a bit higher in the clamps, then all you might need is a link from one of the above two. Also, I believe the old LC4 400/620EGS was available in lower seat form, another possibility to investigate.
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