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Arai Quantum X / DT-X Helmet Liner Sizing

Interior Liner Thickness for Quantum X / DT-X

Helmet Size  Lining Code 12 mm 10 mm 7 mm 5 mm
XS I Optional Standard
S II Optional Standard Optional
M III Optional  Standard Optional Optional
L III Optional Optional Standard Optional
XL IV Optional Standard Optional
2XL V Optional Standard

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

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