The Arai Quantum 2 has a round-oval shape and will fit a round or "earth" shaped head best. See more info on Arai's Interior Shapes.

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Arai Quantum 2 Helmets

Arai SAQ Face Shield
$52.15 - $86.35 $57.95 - $95.95 10% Off MSRP
(70)
7 colors available
Arai SAL/SAQ Pinlock Lens Insert
(14)
2 colors available
Arai SAQ/SAL Pinlock Face Shield
$53.95 $59.95 10% Off MSRP
Arai SAQ Face Shield With Tear-Off Posts
$47.83 - $56.65 $53.15 - $62.95 10% Off MSRP
3 colors available