I have a helmet cracked in the back from dropping it last year. It is sitting on a shelf as my backup, and I bought a new one. I would suggest that a cracked helmet is better than nothing, but a cracked helmet should be relegated to emergency only use (if any).
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Slow Ride Cyclists of NEPA
People do not seem to realize that their opinion of the world is also a confession of character.
- Ralph Waldo Emerson