i10, i30
| Size |
Centimeters |
Hat Size |
Inches |
| XS |
53 - 54 |
6 5/8 - 6 3/4 |
20 7/8" - 21 1/4" |
| S |
55 - 56 |
6 7/8 - 7 |
21 5/8" - 22" |
| M |
57 - 58 |
7 1/8 - 7 1/4 |
22 1/2" - 22 7/8" |
| L |
59 - 60 |
7 3/8 - 7 1/2 |
23 1/4" - 23 5/8" |
| XL |
61 - 62 |
7 5/8 - 7 3/4 |
24" - 24 3/8" |
| 2XL |
63 - 64 |
7 7/8 - 8 |
24 3/4" - 25 1/4" |
| 3XL |
65 - 66 |
8 1/8 - 8 1/4 |
25 3/8" - 26" |
| 4XL |
67 - 68 |
8 3/8 - 8 1/2 |
26 3/8" - 26 3/4" |
| 5XL |
69 - 70 |
8.75 |
27 1/4" - 27 5/8" |
C91
| Size |
Centimeters |
Hat Size |
Inches |
| XS |
53 - 54 |
6 5/8 - 6 3/4 |
20 7/8" - 21 1/4" |
| S |
55 - 56 |
6 7/8 - 7 |
21 5/8" - 22" |
| M |
57 - 58 |
7 1/8 - 7 1/4 |
22 1/2" - 22 7/8" |
| L |
58 - 59 |
7 1/4 - 7 3/8 |
22 7/8" - 23 1/4" |
| XL |
60 - 61 |
7 1/2 - 7 5/8 |
23 5/8" - 24" |
| 2XL |
62 - 63 |
7 3/4 - 7 7/8 |
24 3/8" - 24 3/4" |
| 3XL |
64 - 65 |
8 - 8 1/8 |
25 1/4" - 25 5/8" |
| 4XL |
66 - 67 |
8 1/4 - 8 3/8 |
26" - 26 3/8" |
| 5XL |
68 - 69 |
8 1/2 - 8 3/4 |
26 3/4" - 27 1/4" |
C10, CS-R3, F71, FG-17, FG-JET, i20, i71, i90, i91, i100, IS-5, RPHA Series, V10, V31
| Size |
Centimeters |
Hat Size |
Inches |
| XS |
54 - 55 |
6 3/4 - 6 7/8 |
21 1/4" - 21 5/8" |
| S |
55 - 56 |
6 7/8 - 7 |
21 5/8" - 22" |
| M |
57 - 58 |
7 1/8 - 7 1/4 |
22 1/2" - 22 7/8" |
| L |
58 - 59 |
7 1/4 - 7 3/8 |
22 7/8" - 23 1/4" |
| XL |
60 - 61 |
7 1/2 - 7 5/8 |
23 5/8" - 24" |
| 2XL |
62 - 63 |
7 3/4 - 7 7/8 |
24 3/8" - 24 3/4" |
| 3XL |
64 - 65 |
8 - 8 1/8 |
25 1/4" - 25 5/8" |
| 4XL |
66 - 67 |
8 1/4 - 8 3/8 |
26" - 26 3/8" |
| 5XL |
68 - 69 |
8 1/2 - 8 3/4 |
26 3/4" - 27 1/4" |
CL-17
| Size |
Centimeters |
Hat Size |
Inches |
| XS |
54 - 55 |
6 3/4 - 6 7/8 |
21 1/4" - 21 5/8" |
| S |
55 - 56 |
7 - 7 1/8 |
22" - 22 1/2" |
| M |
57 - 58 |
7 1/4 - 7 3/8 |
22 7/8" - 23 1/4" |
| L |
59 - 60 |
7 1/2 - 7 5/8 |
23 5/8" - 24" |
| XL |
61 - 62 |
7 3/4 - 7 7/8 |
24 3/8" - 24 3/4" |
| 2XL |
63 - 64 |
8 - 8 1/8 |
25 1/4" - 25 5/8" |
| 3XL |
65 - 66 |
8 1/8 - 8 1/4 |
25 5/8" - 26" |
| 4XL |
67 - 68 |
8 3/8 - 8 1/2 |
26 3/8" - 26 3/4" |
| 5XL |
69 - 70 |
8.75 |
27 1/4" - 27 5/8" |
CS-MX 2, C50, C70, C71, i50, i31, i80, i40N, F100
| Size |
Centimeters |
Hat Size |
Inches |
| 3XS |
50-51 |
6 1/4 - 6 3/8 |
19 3/4 - 20 1/8 |
| 2XS |
52-53 |
6 1/2 - 6 5/8 |
20 1/2 - 20 7/8 |
| XS |
54-55 |
6 3/4 - 6 7/8 |
21 1/4 - 21 5/8 |
| S |
55-56 |
6 7/8 - 7 |
21 5/8 - 22 |
| M |
57-58 |
7 1/8 - 7 1/4 |
22 1/4 - 22 7/8 |
| L |
58-59 |
7 1/4 - 7 3/8 |
23 1/4 - 23 5/8 |
| XL |
60-61 |
7 1/2 - 7 5/8 |
23 5/8 - 24 |
| 2XL |
62-63 |
7 3/4 - 7 7/8 |
24 3/8 - 24 3/4 |
| 3XL |
64-65 |
8 - 8 1/8 |
25 1/8 - 25 1/2 |
| 4XL |
66-67 |
8 1/4 - 8 3/8 |
26 - 26 3/8 |
| 5XL |
68-69 |
8 1/2 - 8 5/8 |
26 3/4 - 27 1/8 |
F70
| Size |
Centimeters |
Hat Size |
Inches |
| 2XS |
51-52 |
6 3/8 - 6 1/2 |
20 - 20 1/2 |
| XS |
53-54 |
6 5/8 - 6 3/4 |
20 7/8 - 21 1/4 |
| S |
55-56 |
6 7/8 - 7 |
21 5/8 - 22 |
| M |
57-58 |
7 1/8 - 7 1/4 |
22 1/4 - 22 7/8 |
| L |
59-60 |
7 3/8 - 7 1/2 |
23 1/4 - 23 5/8 |
| XL |
61-62 |
7 5/8 - 7 3/4 |
24 - 24 3/8 |
| 2XL |
63-64 |
7 7/8 - 8 |
24 3/4 - 25 1/4 |
| 3XL |
65-66 |
8 1/8 - 8 1/4 |
25 5/8 - 26 |
| 4XL |
67-68 |
8 3/8 - 8 1/2 |
26 3/8 - 26 3/4 |
DS-X1
| Size |
Helmet Size (cm) |
Cheek Pad Size (mm) |
Liner Size (mm) |
| XS |
54-55 |
45 |
12 |
| S |
55-56 |
50 |
9 |
| M |
57-58 |
35 |
12 |
| L |
58-59 |
30 |
9 |
| XL |
60-61 |
30 |
12 |
| 2XL |
62-63 |
25 |
7 |
i70
| Size |
Helmet Size (cm) |
Cheek Pad Size (mm) |
Liner Size (mm) |
| XS |
53-54 |
40 |
15 |
| S |
55-56 |
35 |
12 |
| M |
57-58 |
30 |
12 |
| L |
59-60 |
30 |
18 |
| XL |
61-62 |
30 |
15 |
| 2XL |
63-64 |
25 |
12 |
CS-5N, IS-Cruiser
| Size |
Centimeters |
Hat Size |
Inches |
| XS |
54-55 |
6 5/8 - 6 3/4 |
20 7/8" - 21 1/4" |
| S |
55-56 |
6 7/8 - 7 |
21 5/8" - 22" |
| M |
57-58 |
7 1/8 - 7 1/4 |
22 1/4 - 22 7/8 |
| L |
58-59 |
7 3/8 - 7 1/2 |
23 1/4 - 23 5/8 |
| XL |
60-61 |
7 5/8 - 7 3/4 |
24 - 24 3/8 |
| 2XL |
62-63 |
7 7/8 - 8 |
24 3/4 - 25 1/4 |
Youth Helmet Size Chart
| Size |
Centimeters |
Hat Size |
Inches |
| S |
49 - 50 |
6 1/8 - 6 1/4 |
19 1/4" - 19 3/4" |
| M |
51 - 52 |
6 3/8 - 6 1/2 |
20" - 20 1/2" |
| L |
53 - 54 |
6 5/8 - 6 3/4 |
20 7/8" - 21 1/4" |
| XL |
55 - 56 |
6 7/8 - 7 |
21 5/8" - 22" |
Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.