| Size | Head Circumference (cm) |
Lining Code |
|---|---|---|
| XS | 53 – 54 | I |
| S | 55 – 56 | II |
| M | 57 – 58 | III |
| L | 59 – 60 | III |
| XL | 61 – 62 | IV |
| XXL | 63 – 64 | V |
Helmet Fit
Head circumference measurement (HCM) should be used as a starting point when determining your helmet size. The best possible fit should be determined by an actual test fitting. Changes to Arai interior fit packages can affect the standard pad thickness supplied with the helmet.
Head circumference measurement (HCM) should be used as a starting point when determining your helmet size. The best possible fit should be determined by an actual test fitting. Changes to Arai interior fit packages can affect the standard pad thickness supplied with the helmet.
XD-5 Cheek Pad Thickness
| Size | Thicker (mm) |
Standard (mm) |
Thinner (mm) |
|---|---|---|---|
| XS | 30 | 25 | 20 |
| S | 30 | 25 | 20 |
| M | 30 | 25 | 20 |
| L | 25 | 20 | 15 |
| XL | 25 | 20 | 15 |
| XXL | 20 | 12 | — |
Helmet Shape
XD-5: Intermediate Oval
XD-5: Intermediate Oval