🪖 Arai Quantum-X Helmet
Designed specifically for street riders, the Arai Quantum-X Helmet sets a new standard in comfort, quietness, stability, and ventilation. Drawing from the same relentless development process used in Arai’s race helmets, the Quantum-X refines proven technologies for everyday road use—delivering a smooth, balanced ride across any distance.
Known as the go-to choice for riders with rounder head shapes, the Quantum series continues its legacy with the Quantum-X. This latest evolution combines its signature fit with a full suite of modern features, offering exceptional comfort and performance in a premium, road-focused helmet.
⚠️ Notice
Fluorescent finishes used on select Arai helmet models are not covered under warranty and may naturally fade over time with exposure to sunlight and environmental conditions.
🔧 Specs & Features
Arai leads the industry in rider fitment, offering multiple interior shapes to accommodate the wide range of head profiles. This focus on fit plays a critical role in both comfort and protection.
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Interior Fit Shape: Round Oval (RO)
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Slightly shorter front-to-back and wider side-to-side compared to Intermediate Oval
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Ideal for riders with a rounder head shape
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Backed by decades of Arai fitment research and innovation
Note: Proper helmet fit can only be determined by trying it on. Always ensure a snug, comfortable fit before riding. 
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