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. 


 

     ARAI Helmet Sizing Chart

 Size

Inch Around

Adult S

21 1/4"-21 5/8"

Adult M

22"-22 3/8"

Adult L

22 3/4"-23 1/8"

Adult XL

23 1/2"-23 7/8"

Adult XXL

24 1/4"


 

     Answer  Helmet Sizing Chart

 Size

Inch Around

Youth S

18 1/2"-19 1/8"

Youth M

19 1/4"-19 7/8"

Youth L

20"-20 1/2"

Adult XS

20"-20 1/2"

Adult S

21 1/2"-22"

Adult M

22 1/2"-22 3/4"

Adult L

23 1/4"-23 1/2"

Adult XL

24"-24 1/2"


 

     AXO Helmet Sizing Chart

 Size

Inch Around

Adult XXS

20 1/4"-20 1/2"

Adult XS

20 7/8"-21 1/4"

Adult S

21 5/8"-22"

Adult M

22 3/8"-22 3/4"

Adult L

23 1/8"-23 1/2"

Adult XL

24"-24 3/8"

Adult XXL

24 3/4"-25 1/8"

Adult XXXL

25 1/2"-26


 

     BELL Helmet Sizing Chart

 Size

Inch Around

Youth S 19 1/2" - 20"
Youth M 20" - 20 1/2"
Youth Large 20 1/2" - 21

Adult XS

20 7/8" - 21 1/4"

Adult S

21 5/8" - 22"

Adult M

22 3/8" - 22 3/4"

Adult L 23 1/4" - 23 5/8"

Adult XL

24" - 24 3/8"

Adult XXL

24 3/4 - 25 1/4"


 

     BIEFFE Helmet Sizing Chart

 Size

Inch Around

Adult XS

21 1/5"

Adult S

22 1/4"

Adult M

23"

Adult L

23 3/4"

Adult Xl

23 3/4"

Adult XXL

24 1/2"


 

    CYBER Helmet Sizing Chart

 Size

Inch Around

Adult XS

21 5/8"

Adult S

22 1/2"

Adult M

23 1/4"

Adult L

24"

Adult XL

24 7/8"

Adult XXL

25 5/8"


 

     HJC Helmet Sizing Chart

 Size

Inch Around

Youth S/M

 19 3/4" - 20 1-8"

Youth L/XL

21 1/4"

Adult XXS

21 1/8"

Adult XS

21 1/4"

Adult S

21 5/8"

Adult M

22 3/8"

Adult L

23 1/8"

Adult Xl

23 1/2"

Adult XXL

24 1/4"

Adult XXXL

25 5/8"


     KBC Helmet Sizing Chart

 Size

Inch Around

Adult XS

20 7/8"

Adult S

21 5/8"

Adult M

22 1/2"

Adult L

23 1/4"

Adult XL

24

Adult XXL

24 3/4"


 

    KIMPEX Helmet Sizing Chart

 Size

Inch Around

Adult XS

21 5/8"

Adult S

22 1/2"

Adult M

23 1/4"

Adult L

24"

Adult XL

24 7/8"

Adult XXL

25 5/8"


 

     M2R Helmet Sizing Chart

 Size

Inch Around

Youth S

18 7/8"

Youth M

19 5/8"

Youth L

20 1/4"

Adult XS

21 1/4"

Adult S

22"

Adult M

22 3/4"

Adult Large 23 1/4"
Adult XL 24"
Adult XXXL

25"


 

     NOLAN Helmet Sizing Chart

 Size

Inch Around

Youth S

 19"-19 1/2"

Youth M

20"-20 1/2"

Youth L

21"-21 1/2"

Adult XS

20 1/4"-20 7/8"

Adult S

21"-21 5/8"

Adult M

22 3/4"-22 3/8"

Adult L

22 1/2"-23 1/8"

Adult XL

23 1/4"-24"

Adult XXL

24 1/8"-24 7/8"

Adult XXXL

25"-25 5/8"


 

     SCORPION Helmet Sizing Chart

 Size

Inch Around

X-Small

21 1/4"

Small

21 5/8"

Medium

22 3/8"

Large

23 1/8"

X-Large

23 1/2"

XX-Large

24 1/4"


 

SHARK Helmet Sizing Chart

 Size

Inch Around

X-Small

21 1/4"

Small

22"

Medium

22 7/8"

Large

23 5/8"

X-Large

24 1/2"

XX-Large

25 1/4"


 

     SHOEI Helmet Sizing Chart

 Size

Inch Around

Adult XSmall

21 1/4"

Adult Small

21 5/8"

Adult Medium

22 3/8"

Adult Large

23 1/8"

Adult XLarge

23 1/2"

Adult XXLarge

24 1/4"


 

     SUOMY Helmet Sizing Chart

 Size

Inch Around

Adult XS

20 1/2"

Adult S

21 1/4"

Adult M

22"

Adult L

22 7/8"

Adult Xl

23 5/8"

Adult XXL 24 1/2
Adult XXXL 25 1/4

 

     THH Helmet Sizing Chart

 Size

Inch Around

XX-Small

20 1/2"

X-Small

21 1/4"

Small

22"

Medium

23"

Large

23 1/2"

X-Large

24 3/8"

XX-Large

25 1/4"


 

     WINEX Helmet Sizing Chart

 Size

Inch Around

XX-Small

21 1/8"

X-Small

21 1/4"

Small

21 5/8"

Medium

22 3/8"

Large

23 1/8"

X-Large

23 1/2"

XX-Large

24 1/4"


      Vega Helmet Sizing Chart

Size

Inches

X-small

21.26"

small

22.05"

medium

22.83"

large

23.62"

X-large

24.41"

2X-large

25.20"

3X-large

26"

4X-large

26.80"

XXX-large

27.50"

     Junior Vega  Helmet Sizing

Size

Inches

Junior small

19.50

Junior medium

20.45"

Junior large

21.26"

 

     XPEED Helmet Sizing Chart

 Size

Inch Around

Adult XS

21 1/2"

Adult S

22 1/4"

Adult M

23"

Adult L

23 3/4"

Adult Xl

24 1/2"


      ZOX Helmet Sizing Chart

Size

Inches

XX-small

20-1/2"

X-small

21-1/4"

small

22

medium

22-7/8"

large

23-5/8"

X-large

24 3/8"

XX-large

25 1/2"

XXX-large

26"