Originally Posted by
onyerleft
My guess is that the stem suffered damage when somebody tried to jam in handlebars of the wrong dimension.
Those stems are well known for the internal wedge cracking and breaking all on their own for poor design, overtightening, lack of proper lube, etc.
These won't tolerate a much bigger bar and I don't think that would break the wedge, seems to me like it might help with keeping the wedge intact.
Too small would more likely be the culprit I think.
