A Yamaha SDR... never heard of it, or seen one before... beautiful little machine... ok its a stinkwheel... but non the less... a really pretty little machine... was only around (in japan) for a short while 86-87... bit like the srx6... and it seems to have come from the same parts bin... spedo assy, top yolk and forks and wheels , I thought at first that it was a nicely built bitsa, but google shows me it is in fact virtually a perfect 'as it left the factory' example... not a great fan of 2strokes... but I'd certainly happily own one of these.