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Adult Helmet Sizes
Adult Helmets
 
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
AFX n/a 211/4- 215/8 22 - 227/16 2213/1- 231/4 235/8- 24 243/8- 2413/16 253/16- 255/8 26 - 263/8 263/4- 271/8 n/a inches
n/a 54 - 55 56 - 57 58 - 59 60 - 61 62 - 63 64 - 65 66 - 67 68 - 69 n/a cm.
n/a 63/4- 67/8 7 - 71/8 71/2- 73/8 71/2- 75/8 73/4- 77/8 8 - 81/8 81/4- 83/8 81/2- 85/8 n/a hat size
AGV n/a 211/4- 215/8 22 -223/8 223/4- 231/2 231/2- 24 243/8 243/4- 251/8 n/a n/a n/a inches
n/a 54 - 55 56 - 57 58 - 59 60 - 61 62 - 63 63 - 64 n/a n/a n/a cm.
n/a 63/4-7 7 - 71/8 71/8-71/2 71/2-75/8 73/4 77/8- 8 n/a n/a n/a hat size
Answer n/a 211/4 215/8 223/8 231/8 231/2 241/4 245/8 n/a n/a inches
n/a 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 65 - 66 n/a n/a cm.
n/a 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 8 83/4- 81/2 n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
Azonic 203/4- less 203/4- 201/2 211/2- 221/4 221/4- 23 23 - 233/4 233/4- 241/2 241/2- 251/2 251/2 or greater n/a n/a inches
> 52 52 - 54 54 - 56 56 - 58 58 - 60 60 - 62 62 - 64 < 64 n/a n/a cm.
> 61/2 61/2- 63/4 63/4- 7 7 - 71/4 71/4- 71/2 71/2- 73/4 73/4- 81/8 < 81/8 n/a n/a hat size
Bell n/a 207/8- 211/4 215/8- 22 223/8- 223/4 231/4- 235/8 24 - 243/8 243/4- 251/4 n/a n/a n/a inches
n/a 53- 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 n/a n/a n/a cm.
n/a 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 n/a n/a n/a hat size
Cyber n/a n/a 21 - 215/8 213/4- 223/8 221/2- 231/8 231/4- 24 n/a n/a n/a n/a inches
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a cm.
n/a n/a 63/4- 67/8 7 - 71/8 71/4- 73/8 71/2 -8 n/a n/a n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
Fly n/a 207/8- 211/4 215/8- 22 223/8- 223/4 231/8- 231/2 24 - 24 3/8 251/8- 251/2 n/a n/a n/a inches
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a cm.
n/a 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 75/8- 73/4 n/a n/a n/a hat size
Fox Racing n/a 201/2- 211/8 211/4- 221/8 223/8- 231/8 231/4- 233/4 237/8- 243/4 247/8- 253/4 n/a n/a n/a inches
n/a 52 - 53 54 - 55 57 - 59 58 - 60 60 - 63 62 - 65 n/a n/a n/a cm.
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a hat size
GMax n/a 211/4- 215/8 22 - 227/16 2213/16- 231/4 235/8- 24 243/8- 2413/16 253/16- 255/8 26 - 263/8 n/a n/a inches
n/a 54 - 55 56 - 57 58 - 59 60 - 61 62 - 63 64 - 65 66 - 67 n/a n/a cm.
n/a 63/4 7 - 71/8 71/4- 73/8 71/2- 75/8 73/4- 77/8 8 - 81/8 81/4- 83/8 n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
Grex n/a 211/4- 215/8 22 - 223/8 223/4- 231/8 231/2- 24 24- 243/8 243/4- 251/8 n/a n/a n/a inches
n/a 54 -55 56 - 57 58 - 59 60 - 61 61 - 62 63 - 64 n/a n/a n/a cm.
n/a 63/4 7 - 71/8 71/4- 73/8 71/2- 75/8 75/8- 73/4 77/8- 8 n/a n/a n/a hat size
HJC 20 - 201/2 207/8- 211/4 215/8- 22 221/2- 227/8 231/4- 235/8 24 - 243/8 243/4- 251/4 255/8- 26 n/a n/a inches
51 - 52 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 65 - 66 n/a n/a cm.
63/8- 61/2 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 81/8- 81/4 n/a n/a hat size
Icon n/a 207/8- 211/2 215/8- 22 223/8- 223/4 231/8- 231/2 24 - 243/8 243/4- 251/8 n/a n/a n/a inches
n/a 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 n/a n/a n/a cm.
n/a 61/2- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 n/a n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
KBC n/a n/a 21.7 - 22 22.4 - 22.8 23.2 - 23.6 24 - 24.4 24.8 - 25.2 n/a n/a n/a inches
n/a n/a 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 n/a n/a n/a cm.
n/a n/a 63/4- 67/8 7 - 71/8 71/4- 73/8 71/2- 75/8 73/4- 77/8 n/a n/a n/a hat size
M2R 201/2- 207/ 8 211/4- 215/8 22 - 223/8 223/4 231/8- 231/2 24 - 243/4 251/8- 251/2 n/a n/a n/a inches
52 - 53 54 - 55 56 - 57 58 - 59 60 - 61 62 - 63 64 - 65 n/a n/a n/a cm.
61/2- 65/8 63/4- 67/4 7 - 71/8 71/4 73/8- 71/2 75/8- 77/8 8 - 81/8 n/a n/a n/a hat size
MDS n/a 211/4- 22 22 - 223/8 223/4 223/8- 231/2 23 1/2 - 24 243/8 243/4 n/a n/a inches
n/a 54 - 56 56 - 57 57 - 60 60 - 62 63 - 63 63 - 64 n/a n/a n/a cm.
n/a 63/4- 67/8 7 - 71/8 71/8- 71/2 71/2- 75/8 73/4- 77/8 77/8- 8 n/a n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
Moose n/a 201/2- 207/8 211/4- 215/8 22 - 223/8 223/4- 231/8 231/2- 24 243/8- 243/4 n/a n/a n/a inches
n/a 52 - 53 54 - 55 56 - 57 58 - 59 60 - 61 62 - 63 n/a n/a n/a cm.
n/a 61/2- 65/8 63/4- 67/8 7 - 71/8 71/4- 73/8 71/2- 75/8 73/4- 77/8 n/a n/a n/a hat size
MSR 211/8 211/4 215/8 - 22 223/8 - 223/4 231/8 231/2 - 24 243/8 - 241/4 n/a n/a n/a inches
53 54 55 - 56 57 - 58 59 60 - 61 62 n/a n/a n/a cm.
63/8- 61/2 63/4 67/8- 7 71/8- 71/4 73/8 71/2- 75/8 73/4 n/a n/a n/a hat size
No Fear n/a 21 - 211/2 211/2- 22 221/2- 23 23 - 231/2 24 - 241/2 241/2- 25 n/a n/a n/a inches
n/a 53 - 54 54 - 55 57 - 58 58 - 59 61 - 62 62 - 63 n/a n/a n/a cm.
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
Nolan n/a 201/2- 211/4 215/8-22 223/8- 223/4 231/8- 231/2 24 - 243/8 243/4 n/a n/a n/a inches
n/a 52 - 54 55 - 56 57 - 59 59 - 60 61 - 62 63 n/a n/a n/a cm.
n/a 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8 - 73/4 77/8 n/a n/a n/a hat size
O'Neal n/a 201/2- 211/8 211/4- 221/8 223/8- 231/8 231/4- 233/4 237/8- 233/4 247/8 n/a n/a n/a inches
n/a n/a 57 59 61 63 65 n/a n/a n/a cm.
n/a n/a 7 71/4 71/2 73/4 8 n/a n/a n/a hat size
One Industries n/a 207/8- 211/4 213/8- 22 221/8- 227/8 231/8- 237/8 24 - 241/2 245/8- 251/2 n/a n/a n/a inches
n/a 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 n/a n/a n/a cm.
n/a 65/8- 63/4 63/4- 7 7 - 71/4 71/4- 71/2 71/2- 73/4 73/4- 8 n/a n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
THH 201/4- 201/2 207/8- 211/4 215/8- 22 223/8- 223/4 231/8- 231/2 24 - 243/8 243/4- 251/8 n/a n/a n/a inches
52 53 -54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 n/a n/a n/a cm.
63/8- 61/2 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 n/a n/a n/a hat size
Troy Lee Designs n/a 20 7/8 – 21 1/4" 21-5/821 1/4 – 22" 22 – 22 3/4" 22 3/4 – 23 5/8" 23 5/8 – 24 1/2" 24 1/2 – 24 7/8" n/a n/a n/a inches
n/a 53 - 54 54 - 56 56 - 58 58 - 60 60 - 62 62 - 63 n/a n/a n/a cm.
n/a 65/8- 6 63/4- 7 7 - 71/4 71/4- 7 71/2- 73/4 73/4- 77/8 n/a n/a n/a hat size
Scorpion n/a 211/4 215/8 223/8 231/8 231/2 241/4 n/a n/a n/a inches
n/a 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 n/a n/a n/a cm.
n/a 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 n/a n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
Shoei 211/8 211/4 215/8 223/8 231/8 231/2 241/4 245/8 n/a n/a inches
51 - 52 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 65 - 66 n/a n/a cm.
63/8- 61/2 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 83/8- 81/2 n/a n/a hat size
Skid Lid n/a 211/4- 215/8 22 - 221/2 221/2- 231/4 235/8- 24 241/2- 247/8 251/4 n/a n/a n/a inches
n/a 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 65 n/a n/a n/a cm.
n/a 63/4- 6 7/8 7 - 71/8 71/4- 73/8 71/2- 75/8 73/4 8 n/a n/a n/a hat size
Suomy n/a 201/2- 207/8 211/4- 215/8 22 - 223/8 223/4- 231/8 231/2- 24 243/8- 243/4 251/8 n/a n/a inches
n/a 52 - 53 54 - 55 56 - 57 58 - 59 60 - 61 62 - 63 64 - 65 n/a n/a cm.
n/a 61/2- 6 5/8 63/4 - 67/8 7 - 71/8 71/4- 73/8 71/2- 75/8 73/4- 77/8 8 - 81/8 n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
Thor MX 201/2 207/8- 211/4 215/8- 22 223/8- 223/4 231/8- 231/2 24 - 243/8 243/4- 251/8 n/a n/a n/a inches
52 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 n/a n/a n/a cm.
61/2 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 n/a n/a n/a hat size
Vega n/a 20.87 - 21.26 21.65 - 22.05 22.44 - 22.83 23.23 - 23.62 24.02 - 24.41 24.80 - 25.20 25.60 - 26.00 26.40 - 26.80 27.00 - 27.50 inches
n/a 53 - 54 55 - 56 57 -58 59 -60 61 - 62 63 - 64 65 - 66 67 - 68 69 - 70 cm.
n/a 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 81/8- 81/4 83/8- 81/2 85/8- 83/4 hat size
Xpeed 211/8 211/4 215/8 223/8 231/8 231/2 241/4 245/8 n/a n/a inches
50 - 52 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 65 - 66 n/a n/a cm.
63/8- 61/2 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 83/8- 81/2 n/a n/a hat size
Brand XXS XS S M L XL XXL XXXL 4XL 5XL  
Zamp n/a 211/4 22 227/8 235/8 243/8 243/4 n/a n/a n/a inches
n/a 54 56 58 60 63 63 n/a n/a n/a cm.
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a hat size
Z1R 201/2 207/8- 211/4 215/8- 22 22 - 223/4 231/8- 231/2 24 - 243/8 243/4 -251/8 n/a n/a n/a inches
52 53 - 54 55 - 56 56 - 58 59 - 60 60 - 62 63 - 64 n/a n/a n/a cm.
61/2 65/8- 63/4 67/8- 7 71/8- 71/4 73/8- 71/2 75/8- 73/4 77/8- 8 n/a n/a n/a hat size
  • This chart is for the buyer to use as a guideline for helmet sizing assistance
  • Wrap a cloth measuring tape around your head just above your eybrows. Pull the tape comfortably snug, and read the length. Figure your hat size, then convert to helmet size.