could be PE 250/400, RM250/400 or DR400.
has it got cut outs for a speedo drive on the brake side?
ok i did some checking and they are all the same. The hub for the RM/PE's eventually superceeds to the DR hub. i looked up DR/SP 500 from 83 and the same hub is listed to fit the PE's and RM's
have a look around here. The SP500's in USA are the equivalent bike to the DR500 you posted. the USA DR500's were not like ours and were more like a RM/PE.
so to answer you question YES, but there could be possible differences. like the RM hub may not have cut outs for the speedo drive.
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