1-800-338-6938    follow   

Sizing Center

ARAI

Helmet Size

Head (inches)

Head (cm)

X-SMALL

20 7/8 ? 21 ?

53-54

SMALL

21 5/8 ? 22

55-56

MEDIUM

22 ? - 22 7/8

57-58

LARGE

23 ? - 23 5/8

59-60

X-LARGE

24 - 24 3/8

61-62

XX-LARGE

24 ? - 25 1/8

63-64

XXX-LARGE

25 ? - 26

65-66

 

 

GMAX

Helmet Size

Head (inches)

Head (cm)

X-SMALL

21 ? - 21 5/8

54-55

SMALL

22 ? 22 7/16

56-57

MEDIUM

22 13/16 ? 23 ?

58-59

LARGE

23 5/8 ? 24

60-61

X-LARGE

24 3/8 ? 24 13/16

62-63

XX-LARGE

25 3/16 ? 25 5/8

64-65

XXX-LARGE

26 ? 26 3/8

66-67

 

 

HJC

Helmet Size

Head (inches)

Head (cm)

XX-SMALL

20 - 20 1/2

51-52

X-SMALL

20 7/8 ? 21 ?

53-54

SMALL

21 5/8 ? 22

55-56

MEDIUM

22 ? - 22 7/8

57-58

LARGE

23 ? - 23 5/8

59-60

X-LARGE

24 - 24 3/8

61-62

XX-LARGE

24 ? - 25 ?

63-64

XXX-LARGE

25 5/8 - 26

65-66

XXXX-LARGE

26 3/8 ? 26 3/4

67-68

XXXXX-LARGE

27 ? - 27 5/8

69-70

 

 

NOLAN

Helmet Size

Head (inches)

Head (cm)

X-SMALL

20 7/8 ? 21 ?

53-54

SMALL

21 5/8 ? 22

55-56

MEDIUM

22 ? - 22 7/8

57-58

LARGE

23 ? - 23 5/8

59-60

X-LARGE

24 - 24 ?

61-62

XX-LARGE

24 7/8 ? 25 ?

63-64

 

 

 

 

VEGA

Helmet Size

Head (inches)

Head (cm)

X-SMALL

20.87 ? 21.26

53-54

SMALL

21.65 ? 22.05

55-56

MEDIUM

22.44 ? 22.83

57-58

LARGE

23.23 ? 23.62

59-60

X-LARGE

24.02 ? 24.41

61-62

XX-LARGE

24.80 ? 25.20

63-64

XXX-LARGE

25.60 ? 26.00

65-66

XXXX-LARGE

26.40 ? 26.80

67-68

XXXXX-LARGE

27.00 ? 27.50

69-70

 

 

 

 

 

SHOEI

Helmet Size

Head (inches)

Head (cm)

XX-SMALL

20 1/8 ? 20 ?

51-52

X-SMALL

20 7/8 ? 21 ?

53-54

SMALL

21 5/8 ? 22

55-56

MEDIUM

22 ? - 22 7/8

57-58

LARGE

23 ? - 23 5/8

59-60

X-LARGE

24 ? 24 3/8

61-62

XX-LARGE

24 ? - 25 1/8

63-64

XXX-LARGE

25 5/8 ? 26

65-66

 

 


 

Free Ground Shipping Via Fed Ex, UPS, or Postal Service (OUR CHOICE) Within the Continental United States for All Orders Over $99

Sierra will price match any advertised price on in stock items. Restrictions may apply. Please call for details.

 

 


PayPal—eBay's service to make fast, easy, and secure payments for your eBay purchases!
All Paypal Orders must be verified and confirmed