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GMAX GM64 Modular Helmet

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GMAX GM64 Modular Helmet

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Orders $100 and over qualify for our free shipping offer. See our full shipping policy for further shipping details.

Return any new, unused and unaltered item within 30 business days. Create a return label online for as little as $7.99. Please read our return policy.


  • Motorcycle modular helmet constructed with a lightweight, thermoplastic poly aloy shell
  • Features "Perimeter Frame Design" that provides unequaled wind protection
  • The perimeter frame design allows for one constant sealing surface for the shield and jaw to help keep the unwanted wind noise out
  • Dual Pivot modular jaw design allows the flip jaw to rotate further back and low on the crown of the helmet
  • The pivot jaw will increase the line of sight when in the raised position and it lessens fatiigue by maintaining an even distribution of weight across the helmet
  • The squeeze and lift jaw release system is easy to operate with a gloved hand
  • Features a metal to metal jaw closure
  • Quick detach inner sun shield that is 100% UV protected
  • Controls for the inner sun shield are located on the left side and are easily operated by a gloved hand
  • Low profile forehead vents are in place that can be opened and closed easily with a gloved hand to allow for individual comfort needs
  • State of the art anti-fog, anti-scratch hard coated outer lens for a longer lasting clear view that is UV400 coated which allows 100% UV protection
  • Fully removable, washable, and adjustable Coolmax interior and cheek pads to allow for a comfortable and customizable fit
  • Coolmax comfort liner and cheek pads wick the moisture away from your body and the fabric dries quickly to keep you dry and comfortable
  • Padded D-ring chin strap with a retention
  • Helmet bag included
  • DOT approved


Age & Gender
Model Name for Gear

Item Numbers

Details Item Number Availability Store Pickup
Details:Black  L Item #131-72-5100-L Availability:In stock: Ready to shipStore Pickup:Unavailable
Details:Black  M Item #131-72-5100-M Availability:In stock: Ready to shipStore Pickup:Unavailable
Details:Black  S Item #131-72-5100-S Availability:In stock: Ready to shipStore Pickup:Unavailable
Details:Matte Black  XL Item #131-72-5102-XL Availability:In stock: Ready to shipStore Pickup:Available

GMAX Adult Helmets

Head Circumference (in)20 7/16 - 20 7/821 1/4 - 21 5/822 - 22 7/1622 13/16 - 23 1/423 5/8 - 2424 3/8 - 24 13/1625 3/16 - 25 5/826 - 26 3/826 1/2 - 26 5/8
Head Circumference (cm)51 - 5253 - 5455 - 5657 - 5859 - 6061 - 6263 - 6465 - 6667 - 68
Hat Size6 1/2 - 6 5/86 3/4 - 6 7/87 - 7 1/87 1/4 - 7 3/87 1/2 - 7 5/87 3/4 - 7 7/88 - 8 1/88 1/4 - 8 3/8 

General Sizing information

If you are unsure about your size, compare your body measurements to the charts provided to determine the correct fit. These charts will give you a good idea of the size to order, but be sure to read special sizing information that may accompany an item description. Some merchandise dimensions may vary from the averages charted here.


With tape level, measure the widest point of your head, approximately 1 inch above your eyebrows and ears.


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