Surely apart from anything else they're too long and sprung to suit the boat anchor that is an Aprilia RS250?

I think the thing to bear in mind is Honda had available and in the range USD Showa's (for the RVF400) and still chose to make the new forks for the mc28 RWU. There will be a reason for this, if they'd thought there was any reason to run USD's on it even just to homologate them to race they would have.
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