Don't know if it's been mentioned, just read the Velonews article but
Quote:
Let’s back up for a moment. Does that mean when the chainring wears out, you have to buy a new power meter? That is indeed the case. But SRAM reps were quick to point out that the predicted durability of the new chainrings could be upward of five years. For many users, that would be the lifespan of a typical power meter anyway. But that doesn’t account for mishaps like bashing a chainring or otherwise damaging it beyond repair.
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Really?