The Quantum-X is built on Arai's Round Oval shell — the right answer for riders whose Intermediate Oval helmets pinch at the temples. Same R75 shape philosophy and PB-cLc construction, fitted to a wider, more circular head profile.
Quantum-X Oriental Helmet
$959.95
Features Round oval shape, achieved by using an interior head liner that combines thicker front...
Quantum-X Wave Helmet
$959.95
Features Round oval shape, achieved by using an interior head liner that combines thicker front...
Quantum-X Steel Helmet
From $899.95
Features Round oval shape, achieved by using an interior head liner that combines thicker front...
Quantum-X Ray Helmet
From $899.95
Features Round oval shape, achieved by using an interior head liner that combines thicker front...
Quantum-X Helmet
From $789.95
Features Round oval shape, achieved by using an interior head liner that combines thicker front...
Corsair-X/Quantum-X/Signet-X Helmet Cheek Pads
$61.95
Features Replacement cheek pad for Arai Corsair-X, Quantum-X and Signet-X helmets Sculpted contact surface for...
