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Sizing Chart - Helmets

Helmet Sizing Chart

 

Arai Helmet Sizing Chart

Size
Centemeter
Inches
Hat Size
XSmall
53-54
21 1/4
6 5/8-
6 3/4
Small
55-56
21 5/8
6 7/8- 7
Medium
57-58
21 3/8
7 1/8-
7 1/4
Large
59-60
23 1/8
7 3/8-
7 1/2
XLarge
61-62
23 1/2
7 5/8-
XXLarge
63-64
24 1/4
7 7/8-8
XXXLarge
65-66
24 5/8
8 3/4-
8 1/2

 

Shoei/HJC Helmet Sizing Chart

Size
Centemeter
Inches
Hat Size
XSmall
53-54
21 1/4
6 5/8-
6 3/4
Small
55-56
21 5/8
6 7/8- 7
Medium
57-58
22 3/8
7 1/8-
7 1/4
Large
59-60
23 1/8
7 3/8-
7 1/2
XLarge
61-62
23 1/2
7 5/8-
7 3/4
XXLarge
63-64
24 1/4
8
XXXLarge
65-66
24 5/8
8 3/4-
8 1/2

 

Icon Helmet Sizing Chart

Size
Centemeter
Hat Size
XSmall
53-54
6 5/8-
6 3/4
Small
55-56
6 7/8- 7
Medium
57-58
7 1/8-
7 1/4
Large
59-60
7 3/8-
7 1/2
XLarge
61-62
7 5/8-
7 3/4
XXLarge
63-64
7 7/8-8

 

Suomy Helmet Sizing Chart

Size
Centemeter
Inches
Hat Size
XSmall
53-54
20 1/2-
20 7/8
6 1/2-
6 5/8
Small
55-56
12 1/4-
21 5/8
6 3/4-
6 7/8
Medium
57-58
22-
22 1/2
7-
7 1/8
Large
59-60
22 7/8-
23 1/4
7 1/4-
7 3/8
XLarge
61-62
23 6/8-
24
7 1/2-
7 5/8
XXLarge
63-64
24 1/2-
24 7/8
7 3/8-
7 7/8
XXXLarge
65-66
25 1/4-
25 5/8
8-
8 1/8

 

Scorpion Helmet Sizing Chart 

Head CircumferenceSizeHat SizeHead Circumference
Inches Metric 
21 1/4"  XS  6 5/8-3/453-54cm
21 5/8"  SM  6 7/8-755-56cm
22 3/8"  MD  7 1/8-1/457-58cm
23 1/8"  LG  7 3/8-1/259-60cm
23 1/2"  XL  7 5/8-3/461-62cm
24 1/4"  XXL  7 7/8-863-64cm
25 5/8"XXXL  8 1/8-1/465-66cm

Akuma Helmet Sizing Chart Click Here
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