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Discontinued Product!

The GMax GM55 Helmet - Solid (Size XS Only)
has been discontinued and will not be returning
Replacement Suggestion:
Half Helmets
Out of Stock
GMax GM55 Helmet - Solid (Size XS Only)

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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

GMax Helmet Sizing

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.
Product Style RevZilla Item # Manufacturer Product # Availability
Carbon / XS 566034 G155413 Out of Stock


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If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

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GMax GM55 Helmet - Solid (Size XS Only) 4.7 5 13 13
Definitely Recommend This helmet comes with some really great features for the price. If you follow the sizing guide, the helmet fits great and although it is a bit more of an oval shape, (my head is pretty round) it doesn't sit up high on my head. The coolmax liner gives you some nice padding and you'll get some airflow across the top of your head. Also the visor is great if you forget your goggles or shades. Its not going to stop the air from getting into your eyes but if you have glasses or clear goggles it will pull down right in front of them and you will look like RoboCop! I am coming from a full face helmet trying out a half shell and I really liked the look of this helmet, the style of it, and the more free feeling experience you get with an open helmet. April 14, 2014
Good value I was used to an external sun visor on my other helmet. For those sunny Florida days ,even with polarized sunglasses on, a visor helps. Anyway , this helmet doesn't have an external visor, but the internal pull down visor is adjustable and works just as we'll. November 13, 2013
Great features and a great price Like most others have said, a traditional snap system to keep the loose end of the strap in place would be a HUGE help. It's tough to keep it from slapping you in the neck over 30mph. The helmet fits well and is comfortable below highway speeds. At 50+ it has a tendency to rotate backwards on your head, making it a bit uncomfortable, but making the sun visor useless. And speaking of the visor, it is a great feature to have in an emergency situation, but it cannot replace glasses once you exceed 20mph, beware of teary eyes and obstructed vision, I had to pull over and get my glasses out it was so bad. All that being said, it looks good (the faux carbon fiber is a meager imitation, but fine for the price), fits well and exceeded my realistic expectations for such an inexpensive piece. October 19, 2013
good value Still mushroom head, but no worse than other DOT half-shells. I like the visor for rain and the helmet is light. Very pleased with price paid and prompt delivery. October 7, 2013
Not too much of a bubble head Fits well. I do an XL helmet in full face, this one I ordered a large and it is perfect. September 2, 2013
Great Quality and Fit I went to a local dealer and tried on a bunch of different brands of half helmets and none seemed to fit well. I came back to revzilla and took a chance on this helmet. The size chart said it would fit well, and the price was right to try it out. I was not disappointed. This helmet fits perfectly for me based on the size chart. The quality of the helmet is excellent. No pressure points for me personally, and the included air curtain for the ears, and the internal sun visor makes this helmet a great buy for anyone looking for a little more wind in their face. My one complaint about the helmet is with the liner. When I take the helmet off, the liner puffs out a bit as it hugs/sticks to the hair/skin. A simple touch in the top of the helmet pushes it back in just fine. It's only a minor complaint - but all the good this helmet has going for it far outweighs it. The helmet is currently on closeout right now, so I'm not sure if Revzilla is just ceasing to carry them, or if they're going out of production for a new model - but the GM55 is a great helmet. If you're on the fence, snag it up while you can here! Revzilla shipped very quickly and I got it (free shipping) within two business days. I couldn't be happier! August 15, 2013
Great product for the price! Love everything about the helmet, only thing is that it felt a little tight. So I just grabbed a piece of sand paper and shaved down the inside of the helmet. Now it fits perfect and feels great on my head. Overall this was a awesome purchase! August 12, 2013
Revzilla consistently great Got great advice from Revzilla staff, all questions answered, no pressure. Ordered 2 of these (for my wife and I), advised of easy return/exchange if any problems at all. Chose regular shipping (which ended up being free anyway) and still arrived at our door in 24 hours! Very happy with this vendor. As for the helmet, DOT approved half-helmet that doesn't give you mushroom head. What more can you ask for? August 5, 2013
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