I dont know if many of you have watched it much supermoto but half of the track IS dirt. If you are not riding very difficult terrain just go ride it!
You can swap MANY MANY KTM lc4 parts and if I was to do what youre trying I would:
Buy a used lc4 or SXC shock and forks along with a matching set of wheels with the appropriate front axle size to match the 43 or 48 mm fork.
Then when you ride gnarly single track or hill climbs swap the whole shebang
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