Two piece discs

I'm intending fitting rear discs to my SD1 - but the usual way involves
both alterations to the hub and a stock disc from another model.
 I obtained some ally bells from a racing one which fit without
modification and take standard AP flat discs - but these cost more than
the modified stock ones. Any one know of a cheaper source? It's only for
ordinary road use.

--
*I couldn't repair your brakes, so I made your horn louder *

    Dave Plowman        dave@davenoise.co.uk           London SW
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