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GMax GM55S Half Helmet.



GMAX leads the helmet industry with another innovative helmet, the 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!



GMax GM55S Helmet Features



  • 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
  • Always do chin strap up securely
  • DOT Certified


GMax GM55S Helmet Sizing





Helmet Sizing Information.We ask that you use the following information to help choose the proper size helmet. In order for a helmet to protect properly and be the most comfortable, it must be size to your head correctly.



To find the Correct size helmet for a person's head:

  1. Measure the head circumference one-inch above the eyebrows and ears
  2. Using the circumference measured, use the size chart below to find the approximate size
  3. Once you have tried on the helmet it should fell snug equally around the head. The helmet should not feel too tight or too loose at any point around head.




*** Please remember that all head shapes vary slightly and that this sizing chart is to be used as a starting guide, not an exact guide.



SIZE CHART
CIRCUMFERENCEHELMET SIZE
Metric cmInchesLetterNumber
53 - 54cm 21-1/4" - 21-5/8"XS 6-3/4 - 6-7/8
55 - 56cm22" - 22-7/16"S7 - 7-1/8
57 - 58cm 22-13/16" - 23-1/4"M 7-1/4 - 7-3/8
59 - 60cm 23-5/8" - 24"L 7-1/2 - 7-5/8
61 - 62cm 24-3/8" - 24-13/16"XL 7-3/4 - 7-7/8
63 - 64cm 25-3/16" - 25-5/8"XXL8 - 8-1/8
65 - 66cm26" - 26-3/8" XXXL 8-1/4 - 8-3/8
67 - 68cm 26-1/2" - 26-5/8" XXXXL 

Most Helpful Reviews :

totally cool

by - verified purchaser
i really dig this helmet. it a excellent fit, sit's low on my head and very light weight. it a true extention of my melon! at 85 mph....oh aa i mean 70 mph i felt wind no blow back or pull up on this helmet. the visor down really help in aspect. if you planning a long ride i highly recommend ear plug for the loud wind noise which our expected with these kind of head gear. this is VERY COOL looking bucket. it even made my ugly mug look good a feat in it self !!! overall i give it a 9.8 out of 10. whoaaaa

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Great Helmet

by - verified purchaser
Perfect for me fits great works great I've bought all my equipment from Jafrum and will be a lifetime customer.Will be getting boots soon thanks again

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Nice Helmet For The Money

by - verified purchaser
I wanted something a little lighter and more open than my full face helmet and this fits the bill perfectly. Great ventilation and very comfortable. On the down side, the eye shield doesn't really protect your eyes very well. . . it doesn't come down low enough so you'll still need eye protection. The helmet also runs a little small, so you might want to go up a size. All in all, a great buy though

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Gmax GM55S Solid Helmet

by - verified purchaser
Love the helmet. Lightest and coolest helmet I have had in over 40 years of riding. Shield is very convenient works well with eyeglasses.

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G Max Half Helmet

by - verified purchaser
Good overall helmet although the eye shield is a little too close for use with glasses and needs to drop down maybe an inch more. Also having it come standard with a clear lens would better in my opinion

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GMax GM55s Helmet

by - verified purchaser
I now have two of these because they are a good for just about any kind of weather. I have worn them in very cold and hot weather with no problems at all. Snap in collar is a breeze to change in and out. Great value for the money and no mushroom head if you size them right. Couldn't pass up the price that Jafrum is selling these at.

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Great Price,Nice Helmet

by - verified purchaser
Love this helmet brought one for me, then re-order one for my wife,best friend liked it, order him one ..price was so good order 10 more to give as Christmas gifts. You can't go wrong with this helmet or this price

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Love The Helmet

by - verified purchaser
I must say that i really love this helmet. .I have a more expensive helmet and this helmet is much lighter and just as comfortable.

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Great helmet, great price

by - verified purchaser
Simple, super functional, super price...and cool! What more can you ask?

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GmaxGm55S Helmet Review

by - verified purchaser
love the helmet. visor provided shade from glare of sun in the early morning when riding into the sunrise. also provided protection in heavy rain. used it for the first time in a 5000 mile round trip to Sturgis. great price also. would recommend this helmet.

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Awesome Helmet

by - verified purchaser
Helmet is awesome! It fits great and the extra liner is really comfortable. The regular liner does not attach in very well but it is manageable and, for the price, it is not a deal breaker at all.Granted, I just use it for in town traffic (no long trips or interstate) so I might not be the best one to judge whether or not to purchase. I have a more heavy duty helmet for that.

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Gmax GM55S Solid

by - verified purchaser
This is my first helmet for my bike and it is a great helmet. I bought matt black and looking sleek! It does the protection but give you little bit of Mushroom head, but I can deal with it. Everything's good except for one thing! Instruction for changing visor is not described well and I am having hard time trying to change the visor!. But my overall rating for this price is awesome!

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Gmax GM55S Solid Helmet Review

by - verified purchaser
very happy with this helmet would have given it a 5 star if the visor did come down farther.

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GMax GM55S Helmet Review

by - verified purchaser
Best half helmet I have owned. Only complaint is no snap to hold the end of the strap.

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Gmax GM55S Solid Excellent helmet

by - verified purchaser
Although this helmet still promotes the mushroom look when the visor is up, with it down, the effect is mitigated. The helmet is light but very well made. The pop down visor blocks 90% of the wind from my eyes. No worries about scratching the visor while the helmet is off. This helmet allows a lot of air circulation. I had zero head sweat riding on a 92 degree sunshine day. The liner pops out for cleaning if I do get some head sweat. I haven't used the snap in neck and ear covers but I'm sure it will be a great help to my year round riding here in Tidewater Virginia area. All in all, thumbs up good helmet. Only complaint, my bike is blue. I would have preferred a blue to match. No biggie, my old helmet was black (matte) also. This glossy black looks good.

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Nice helmet for the price

by - verified purchaser
Great value and very comfortable. I ordered one size larger than I measured and the helmet fit perfectly. Not as low profile as I had hoped, but still a really nice helmet.

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Nice Helmet

by - verified purchaser
Order one size up.

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GMax GM55S Helmet

by - verified purchaser
Nice helmet...great price...looks the same as the $150 helmets...I took a size smaller than I usually do because of some of the reviews I read....turned out perfect!!!

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Good For The Price

by - verified purchaser
I rated it a little lower as the 2XL still wasn't big enough for my cranium. A little "dent tuning" made it fit ok.

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G-Max GM55S

by - verified purchaser
I received this helmet as a gift from my wife. It is very light, cool, and comfortable, and the fit is such that it sits low on my head so it is very stable at highway speeds. The only thing I can say regarding improvements is the chin strap needs some hook and pile (velcro) to secure the end of the strap because the attached rubber band doesn't hold the strap so it flaps around in the wind. The drop down visor and the neck curtain are nice features, and I found that the visor drops down far enough to keep the wind out of my eyes (unlike some of the reviews I've read on the helmet). Overall I'm extremely happy with the helmet, and Jafrum has the best prices that I've found on the internet.

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Browse 1 question and 4 answers
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Why did you choose this?
Jafrum Store
Going to Americade in Lake George, NY next week and need glasses to block out wind on long ride. Use regular sunglasses now and airflow into eyes is annoying, even on short rides. Reviews sounded good, so I am trying smoked and clear lenses for long ride.
Charles B onMay 26, 2015
Love the built sun shield. comes in handy on those sunny windy days. I highly recommend this helmet
Billy W onMar 5, 2015
Easy helmet for long trips with sun guard!
George F onApr 15, 2015
I am not sure, but I don't like how it sits so high on my head.
David M onJan 19, 2015