This seems to be the route the rep was going with ours.
I don't see how an 'external impact' could crack the cranks in behind the spider anyway, it'd put that area in compression which I would have though would be the opposite of what was required to crack them.
You’d also think that any external impact strong enough to break a crankset would also damage the frame or rider in some way...not the sort of thing you wouldn’t tell them about. Accusing your customers of dishonesty doesn’t seem like a particularly good business model to me but what do I know eh!
This seems to be the route the rep was going with ours.
I don't see how an 'external impact' could crack the cranks in behind the spider anyway, it'd put that area in compression which I would have though would be the opposite of what was required to crack them.