GMax Size Chart

Note: The sizing chart listed below represents the manufacturer's suggested sizing guidelines only, and is subject to change without notice. MotorcycleCloseouts is not responsible for the accuracy of any sizing charts. If you have a specific sizing question, please email us at help@motorcyclecloseouts.com


G Max Adult Helmet Sizing

Manufacturer's Suggested Size Chart (Not a guarantee of fit) 
Size Inches Centimeters  Hat Size
XS 20(1/2) - 21(1/4) 53 - 54 6(5/8) - 6(3/4)
SM 21(1/4) - 22 55 - 56 6(7/8) - 7
MD 22 - 23 57 - 58 7(1/8) - 7(1/4)
LG 23 - 23(3/4) 59 - 60 7(3/8) - 7(1/2)
XL 24 - 24(1/2) 61 - 62 7(5/8) - 7(3/4)
2XL 24(1/2) - 25(1/4) 63 - 64 7(7/8) - 8
3XL 25(1/4) - 26 65 - 66 8(1/8) - 8(1/4)
4XL 26 - 26(3/4) 67 - 68 8(3/8) - 8(1/2)
5XL 26(3/4) - 27(1/2) 69 - 70 8(5/8) - 8(3/4)

G Max Youth Helmet Sizing

Manufacturer's Suggested Size Chart (Not a guarantee of fit) 
Size Inches Centimeters  Hat Size
Youth SM 18(1/4) - 19 47 - 48 5(7/8) - 6
Youth MD 19 - 19(3/4) 49 - 50 6(1/8) - 6(1/4)
Youth LG 19(3/4) - 20(1/2) 51 - 52 6(3/8) - 6(1/2)

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