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Arai Quantum-X


Round Heads Rejoice! The Arai Quantum is back! Round-heads, earth-shaped heads and “bulb” heads finally have a helmet that fits. It’s been a long time — nearly 7 years — since Arai had a “Round Oval” helmet in their U.S. lineup. The last Round Oval helmet offered by the Japanese company was the Arai Quantum II …