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YEP, thats what I would call a catastrophic failure.
That gives me even more reason to try and close the frames up on ours.
(they just got to last long enough for operation DRZ400s & TW200)
I wonder, did you ever have to replace to engine mounting bolts or were they all sized correctly from the start.
On our bikes the engine mounting bolts were smaller to adjust for the lousy fit of the engine to frame.This allowed the engines to move around and shear off the bolts and lossen the chain.
I wonder if ours has any metal fatigue at that point in the frame?
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