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To measure your correct helmet size, measure the circumference of the head, like a headband, one inch above the eyebrows, above the ears. Match inch measurement to chart. If between sizes, choose the next larger size. Helmet should fit snugly but not overly tight. |
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ARAI Helmet Sizing Chart |
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|
Size |
Inch Around |
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Adult S |
21 1/4"-21 5/8" |
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Adult M |
22"-22 3/8" |
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Adult L |
22 3/4"-23 1/8" |
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Adult XL |
23 1/2"-23 7/8" |
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Adult XXL |
24 1/4" |
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AXO Helmet Sizing Chart |
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|
Size |
Inch Around |
|
Adult XXS |
20 1/4"-20 1/2" |
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Adult XS |
20 7/8"-21 1/4" |
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Adult S |
21 5/8"-22" |
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Adult M |
22 3/8"-22 3/4" |
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Adult L |
23 1/8"-23 1/2" |
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Adult XL |
24"-24 3/8" |
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Adult XXL |
24 3/4"-25 1/8" |
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Adult XXXL |
25 1/2"-26 |
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BELL Helmet Sizing Chart |
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|
Size |
Inch Around |
| Youth S | 19 1/2" - 20" |
| Youth M | 20" - 20 1/2" |
| Youth Large | 20 1/2" - 21 |
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Adult XS |
20 7/8" - 21 1/4" |
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Adult S |
21 5/8" - 22" |
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Adult M |
22 3/8" - 22 3/4" |
| Adult L | 23 1/4" - 23 5/8" |
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Adult XL |
24" - 24 3/8" |
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Adult XXL |
24 3/4 - 25 1/4" |
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BIEFFE Helmet Sizing Chart |
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|
Size |
Inch Around |
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Adult XS |
21 1/5" |
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Adult S |
22 1/4" |
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Adult M |
23" |
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Adult L |
23 3/4" |
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Adult Xl |
23 3/4" |
|
Adult XXL |
24 1/2" |
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CYBER Helmet Sizing Chart |
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|
Size |
Inch Around |
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Adult XS |
21 5/8" |
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Adult S |
22 1/2" |
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Adult M |
23 1/4" |
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Adult L |
24" |
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Adult XL |
24 7/8" |
|
Adult XXL |
25 5/8" |
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HJC Helmet Sizing Chart |
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|
Size |
Inch Around |
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Youth S/M |
19 3/4" - 20 1-8" |
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Youth L/XL |
21 1/4" |
|
Adult XXS |
21 1/8" |
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Adult XS |
21 1/4" |
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Adult S |
21 5/8" |
|
Adult M |
22 3/8" |
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Adult L |
23 1/8" |
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Adult Xl |
23 1/2" |
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Adult XXL |
24 1/4" |
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Adult XXXL |
25 5/8" |
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KBC Helmet Sizing Chart |
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|
Size |
Inch Around |
|
Adult XS |
20 7/8" |
|
Adult S |
21 5/8" |
| Adult M |
22 1/2" |
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Adult L |
23 1/4" |
|
Adult XL |
24 |
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Adult XXL |
24 3/4" |
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KIMPEX Helmet Sizing Chart |
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|
Size |
Inch Around |
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Adult XS |
21 5/8" |
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Adult S |
22 1/2" |
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Adult M |
23 1/4" |
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Adult L |
24" |
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Adult XL |
24 7/8" |
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Adult XXL |
25 5/8" |
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M2R Helmet Sizing Chart |
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|
Size |
Inch Around |
|
Youth S |
18 7/8" |
|
Youth M |
19 5/8" |
| Youth L |
20 1/4" |
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Adult XS |
21 1/4" |
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Adult S |
22" |
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Adult M |
22 3/4" |
| Adult Large | 23 1/4" |
| Adult XL | 24" |
| Adult XXXL |
25" |
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NOLAN Helmet Sizing Chart |
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|
Size |
Inch Around |
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Youth S |
19"-19 1/2" |
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Youth M |
20"-20 1/2" |
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Youth L |
21"-21 1/2" |
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Adult XS |
20 1/4"-20 7/8" |
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Adult S |
21"-21 5/8" |
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Adult M |
22 3/4"-22 3/8" |
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Adult L |
22 1/2"-23 1/8" |
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Adult XL |
23 1/4"-24" |
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Adult XXL |
24 1/8"-24 7/8" |
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Adult XXXL |
25"-25 5/8" |
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SCORPION Helmet Sizing Chart |
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|
Size |
Inch Around |
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X-Small |
21 1/4" |
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Small |
21 5/8" |
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Medium |
22 3/8" |
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Large |
23 1/8" |
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X-Large |
23 1/2" |
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XX-Large |
24 1/4" |
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SHARK Helmet Sizing Chart |
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|
Size |
Inch Around |
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X-Small |
21 1/4" |
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Small |
22" |
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Medium |
22 7/8" |
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Large |
23 5/8" |
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X-Large |
24 1/2" |
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XX-Large |
25 1/4" |
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SHOEI Helmet Sizing Chart |
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|
Size |
Inch Around |
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Adult XSmall |
21 1/4" |
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Adult Small |
21 5/8" |
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Adult Medium |
22 3/8" |
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Adult Large |
23 1/8" |
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Adult XLarge |
23 1/2" |
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Adult XXLarge |
24 1/4" |
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SUOMY Helmet Sizing Chart |
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|
Size |
Inch Around |
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Adult XS |
20 1/2" |
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Adult S |
21 1/4" |
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Adult M |
22" |
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Adult L |
22 7/8" |
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Adult Xl |
23 5/8" |
| Adult XXL | 24 1/2 |
| Adult XXXL | 25 1/4 |
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THH Helmet Sizing Chart |
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|
Size |
Inch Around |
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XX-Small |
20 1/2" |
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X-Small |
21 1/4" |
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Small |
22" |
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Medium |
23" |
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Large |
23 1/2" |
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X-Large |
24 3/8" |
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XX-Large |
25 1/4" |
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WINEX Helmet Sizing Chart |
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|
Size |
Inch Around |
|
XX-Small |
21 1/8" |
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X-Small |
21 1/4" |
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Small |
21 5/8" |
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Medium |
22 3/8" |
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Large |
23 1/8" |
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X-Large |
23 1/2" |
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XX-Large |
24 1/4" |
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XPEED Helmet Sizing Chart |
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|
Size |
Inch Around |
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Adult XS |
21 1/2" |
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Adult S |
22 1/4" |
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Adult M |
23" |
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Adult L |
23 3/4" |
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Adult Xl |
24 1/2" |
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ZEUS Helmet Sizing Chart |
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|
Size |
Inches |
|
XX-small |
20-1/8" |
|
X-small |
20-7/8" |
|
small |
21-5/8" |
|
medium |
22-1/2" |
|
large |
23-1/4" |
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X-large |
24" |
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XX-large |
24-3/4" |
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XXX-large |
25-5/8" |
The Zeus helmets tend to be a little snug. If in doubt choose the next large size.