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GMAX GM55 Skull Helmet

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GMAX GM55 Skull Helmet

GMAX leads the helmet industry with another innovative helmet, the GM 55 half helmet with retractable sun shield, lightweight small shell design that sits down on your head and GMAX industry leading "No Bull Venting Design" all for a reasonable price! 


  • Retractable hard coated sun shield, changeable, simple no springs design
  • Premium venting reduces heat at the top of the head
  • Comfort liner, shell and styro designed for maximum venting without reducing the integrity of the helmet
  • Coolmax performance materials and Chitosan anti-bacterial materials improve comfort and safety
  • Removable washable comfort liner
  • GMAX premium fit for maximum comfort
  • Included with removable snap in rear neck curtain for cool weather riding
  • Premium soft materials used for padded chin strap covering
  • D.O.T approved
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Have a functionality, fit, or otherwise product-specific question about the GMAX GM55 Skull Helmet? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

GMAX GM55 Skull Helmet
Already Asked: 2 Questions, 5 Answers
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RevZilla Store asked: Why did you choose this?
arturo r: love the style and logo plus light in wieght Jan 26, 2014
Eric G: Needed quality inexpensive helmet quickly. Sep 7, 2013
nathan w: Price! Aug 31, 2013
A shopper asked: is it suitabe for australian safety satndards? Sep 11, 2013
Answer this · Send to friends Good question? Yes (0) No (0)
Trevor M: This helmet has the necessary warning labels and DOT notices and is not obscured as required by Australian standards. There is also sufficient impact absorption layers, its not just a plastic outer shell and the strap is of a high quality, unlike the novelty "pot" helmet.

I have not confirmed my opinions though, as I'm currently living/working outside of Australia and didn't bother to investigate fully.
Sep 20, 2013
Reply to Trevor Good answer? Yes (0) No (0)
Gregory H: It meets safety requirements in the United States. It is D.O.T(Department of Transportation) compliant! Sep 11, 2013
Reply to Gregory Good answer? Yes (0) No (0)

Adult Helmet

SizeHat SizeMeasurement (in)
XS6 3/421 1/4 - 21 5/8
SM7 - 7 1/8
22 - 22 7/16
MD7 1/4 - 7 3/8
22 3/16 - 23 1/4
LG7 1/2 - 7 5/8
23 5/8 - 24
XL7 3/4 - 7 7/8
24 3/8 - 24 13/16
2XL8 - 8 1/8
25 3/16 - 25 5/8
3XL8 1/4 - 8 3/8
26 - 26 3/8

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

Click here to see the full GMAX Helmets Size Chart
Product Style RevZilla SKU ID Manufacturer Product # Availability
Flat Black/Silver / LG 566042 YG155626 Out of Stock
Flat Black/Silver / MD 566043 YG155625 Out of Stock
Flat Black/Silver / SM 566044 YG155624 Out of Stock
Flat Black/Silver / XL 566045 YG155627 Out of Stock
Flat Black/Silver / XS 566046 YG155623 Out of Stock
Flat Black/Silver / 2XL 566047 YG155628 Out of Stock