Motorcycle Helmet Performance: Blowing the Lid Off
Fiberglass helmets such as the the Arai Tracker (shown) showed substantial damage to their shells after the edge impact. The polycarbonate-shell helmets were largely unmarked. Neither result is essentially better: Either shell material can be used to make excellent helmets. Polycarbonate helmets generally transmit fewer Gs to the head in our testing than fiberglass-shell lids, even when certified to the same standards.
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