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Arai Quantum-X Solid Integral Helmet

Size Guide
Arai Oval Sizing Chart

How to choose an Arai Helmet? 

First, you need to measure the circumference of your head. 

Second, each Arai Model Helmet has a different shape because every rider doesn't have the same head.

Quantum-X

The Quantum-X helmet is a round oval shape and it was designed for riders whose heads are slightly wider rather than elongated. The round oval shape was achieved by using an interior headliner that combines thicker front and rear pads with thinner side pads.

Arai GP-5W SA2015 Helmet at CMS

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Arai Quantum-X Solid Integral Helmet

The name Arai has been synonymous with quality and protective technologies since the beginning of their days and the Quantum X continues to push the bounds, proving why Arai stands at the top. The Quantum series has been the go to helmet for riders with a more round headshape and this stays true with the Quantum X, thanks to its balanced length and slight additional width. With the simple installation of a Corsair X head liner, the Quantum X. . . Show More >

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