Purpose-built for the street. A new benchmark in comfort, quiet, stability, and ventilation. Arai applied the same tireless 24-7 focus devoted to our race helmets to designing it, refining and adapting proven concepts to a new purpose. On the rounder end of the head shape spectrum, the Quantum series has always been the 'go-to' helmet of choice. The new Quantum-X brings that shape back in a feature-rich package.


Purpose-built for the street. A new benchmark in comfort, quiet, stability, and ventilation.

QUANTUM-X | PEARL BLACK

The Quantum-X Helmet in Pearl Black is a top-quality, handmade helmet that prioritizes your safety and comfort. With its superior protective features and adjustable fit, it offers a secure and personalized riding experience. While it may come at a slightly higher price point, its Japanese-made craftsmanship ensures exceptional quality and manufacturing standards. Despite a minor noise issue and a quirky visor system, this helmet delivers on its promise of security and relief in case of accidents. Additionally, its great ventilation and removable liner parts allow for a custom fit, making it a worthwhile investment for riders seeking the highest level of protection.


Round heads rejoice! Arai Quantum X review

The review discusses the Arai Quantum X helmet, which fits well for the reviewer's round head shape. Highlights include great ventilation, quality manufacturing, removable liner parts for custom fit, and an impressive shield mechanism. Minor drawbacks included noise and a slightly quirky visor system.


Round heads rejoice! Arai Quantum X review

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Round heads rejoice! Arai Quantum X review

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Round heads rejoice! Arai Quantum X review

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