No M900ie will be compatible after mid 2001 models when the M900ie and Sie changed from hoop to rod link and 25mm axle.
(choice of steel or alloy arms depending on model and spec.)
But why go looking for an S2R1000 to covert to conventional swing arm? Just look for an M1000ie or Sie, which will have a metal tank too.
The conversion will also involve the rear wheel, footrest hangers, exhaust, hugger and probably the suspension link rod among other things... What a palaver!
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