Get an original one titanium nitrided, it reduces friction and resists corrosion.
BTW one of my mates works for a design/engineering firm in leicester, and has access to a multi-million pound CNC machine if you want to make a replacement, only thing to pay for is material costs. Another mate has access to a 3d laser scanner, so things could get quite interesting... was thinking of making some custom rearsets and perhaps a bottom yoke from billet aluminium
[Edited on 5-6-2003 by DJTera]