How to size
ARAI Helmets
| SIZE |
INCHES |
CM |
HAT SIZE |
| X-SMALL |
20 7/8 - 21 1/4 |
53-54 |
6 5/8 - 6 3/4 |
| SMALL |
21 5/8 - 22 |
55-56 |
6 7/8 - 7 |
| MEDIUM |
22 3/8 - 22 3/4 |
57-58 |
7 1/8 - 7 1/4 |
| LARGE |
23 1/8 - 23 1/2 |
59-60 |
7 3/8 - 7 1/2 |
| X-LARGE |
24 - 24 3/8 |
61-62 |
7 5/8 - 7 3/4 |
| XX-LARGE |
24 3/4 - 25 1/8 |
63-64 |
7 7/8 - 8 |
ARAI OPTIONAL/REPLACEMENT CHEEK PAD THICKNESS GUIDE
| HELMET SIZE |
CORSAIR V |
RX-Q |
VECTOR-2 |
SIGNET Q |
VX-PRO 3 |
XD4 |
| OPTIONAL |
40MM |
- |
- |
40MM |
35MM |
35MM |
| OPTIONAL |
35MM |
35MM |
- |
35MM |
- |
- |
| X-SMALL (STANDARD) |
30MM |
30MM |
30MM |
30MM |
25MM |
25MM |
| SMALL (STANDARD) |
30MM |
30MM |
30MM |
30MM |
25MM |
25MM |
| MEDIUM (STANDARD) |
30MM |
30MM |
30MM |
30MM |
25MM |
25MM |
| LARGE (STANDARD) |
25MM |
25MM |
25MM |
25MM |
20MM |
20MM |
| X-LARGE (STANDARD) |
25MM |
25MM |
25MM |
25MM |
20MM |
20MM |
| XX-LARGE (STANDARD) |
25MM |
25MM |
25MM |
20MM |
20MM |
20MM |
| OPTIONAL |
15MM |
- |
- |
15MM |
12MM |
12MM |
| OPTIONAL |
12MM |
- |
- |
12MM |
- |
- |
| SHELL INTERIOR SHAPE* |
I/O |
I/O |
I/O |
L/O |
I/O |
I/O |
ARAI OPTIONAL/REPLACEMENT LINER THICKNESS GUIDE
| HELMET SIZE |
LINING CODE |
12MM THICKNESS |
10MM THICKNESS |
7MM THICKNESS |
5MM THICKNESS |
| X-SMALL |
II (SM) |
OPTIONAL |
OPTIONAL |
STANDARD |
OPTIONAL |
| SMALL |
II (SM) |
OPTIONAL |
OPTIONAL |
STANDARD |
OPTIONAL |
| MEDIUM |
III (MD) |
OPTIONAL |
STANDARD |
OPTIONAL |
OPTIONAL |
| LARGE |
III (MD) |
OPTIONAL |
OPTIONAL |
STANDARD |
OPTIONAL |
| X-LARGE |
IV (LG) |
OPTIONAL |
OPTIONAL |
STANDARD |
OPTIONAL |
| XX-LARGE |
IV (LG) |
OPTIONAL |
OPTIONAL |
OPTIONAL |
STANDARD |
Youth Gates Helmet
| Sizes |
Centimeter |
Inches |
| Small |
51-52 cm |
20 - 20 1/2 in |
| Medium |
53-54 cm |
20 7/8 - 21 1/4 in |
| Large |
55-56 cm |
21 5/8 - 22 in |