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GMAX Helmet Size Chart


GMax Helmet Sizing

View all GMAX Helmets
For riders falling between sizes, we recommend sizing down.
Size Head (cm)
XS 53-54
SM

55-56

MD 57-58
LG 59-60
XL 61-62
2XL 63-64
3XL 65-66
4XL

67-68

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.


How to Measure

  • H Head
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.

GMax Youth Helmet Sizing

View all GMAX Helmets
Size Head (cm)
SM 49 - 50
SM/MD 50 - 51
MD 51 - 52
LG 53 - 54
LG-XL 52 - 53

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.


How to Measure

  • H Head
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.