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GMax GM54S Modular Helmet.

Gmax has a unique modular helmet design with the Gmax Gm 54s modular helmet. This lid has a L.E.D. light system built into the back of the helmet. The light glows solid, blinks slowly, or blinks fast. Of course, you can keep it off as well. Gmax has one upped everyone by also selling an optional brake light kit that you can wire into the bike and have the L.E.D. on the helmet in unison with your brake lights. The 54s modular helmet has the GMAX D.E.V.S. exhaust system, side vents, SPC top vents, chin bar vents, and a removable chin curtain to give you complete control of the airflow in your helmet. The Gm 54s has also added an integrated internal sunshield to helmet to give you on the fly sun protection. The modular chin bar mechanism and inner sunshield lever makes this helmet glove friendly, smooth and functional. This helmet is ready for all types of riding. If you are thinking of a purchasing a modular helmet, the 54s is definitely worth a look.

Item Code: GMaxGM54SSolid



Color:Black, Flat Black

Certifications:DOT approved

Shell:thermo-plastic alloy


GMAX leads the helmet industry with another innovative helmet, the 54S modular 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!

  • New inner flip tint sun lens.
  • Inner flip shield is easily raised of lowered with a leverlocated on the exterior of the helmet.
  • Distortion free clear single lens shield.
  • New integrated multi-function red L.E.D rear light.
  • Optional rear brake light kit available.
  • One hand easy to use chin bar push to open mechanism.
  • Lightweight D.O.T approved thermo-plastic alloy shell.
  • Excellent shield sealing reduces unwanted air and noise.
  • GMAX "D.E.V.S" adjustable "dual exhaust venting system",top, side, and rear venting reduces fogging and sweating by allowing hot air to escape from the mouth area and top of head.
  • Adjustable chin vent directs air upward across the inside of theshield to help reduce or eliminate fogging.
  • Large eye port for improved range of vision.
  • Coolmax comfort liner and cheek pads move the moisture away from your body and the fabric dries quickly. The added performance keeps you dry and comfortable.
  • Removable/washable interior and adjustable cheek pads allow for more comfortable sizing.
  • Deluxe ear pockets for better fit and comfort.
  • Built in speaker pockets for communication systems.
  • Soft padded chin strap.
  • Painted shell with high quality clear coat finish.
  • Soft helmet bag included.

Size Chart

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.

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 :

GMax Helmet

Awesome helmet for a very reasonable price.

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Great GMax GM54S Solid Helmet

Absolutely Great Helmet !!! In any weather ,Heat,Cold & Rain. I use it daily and never had a problem with it. It's not heavy so i don't ever get fatigued. Whether open or closed, the vents work Fine. I really like the Red light on the back for those Foggy mornings or while riding in traffic. The interior liner & cheek pads are easily removable for cleaning. There is enough room inside to wear sunglasses & still use the tinted sunshield.
My Favorite feature is the Modular flip-Up chin bar. It's Easy to use with gloves on and it locks down firmly in place down or stays securely in it's up position . It's Nice not having to remove your helmet while at Fuel stops. I would buy another one if anything happened to this one & would Recommend it to anyone

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Great Modular Helmet

Have worn it a few times now and love it. Very comfortable, and well ventilated. Rode today in 95+ temps here in FL and thought the helmet did a great job of keeping me cool. The integrated sun visor is a nice feature and the articulating face shield was easy to manipulate while riding. Overall a great helmet at a very reasonable price.

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GMax GM54S Modular Helmet Reviews

by - verified purchaser
I ordered the wrong size. Jafrum was quick to replace it with the correct size at no charge. Great customer service both original order and the size replacement. The helmet is very nice for the price. Lots of vents, sun shield works well and comfortable. My only complaint is the helmet is a little louder than my full face

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Just what I was looking for.

by - verified purchaser
Product shipped quickly and was exactly what I wanted. Can't beat the price and the features of the helmet are great. It certainly feels like a high-end helmet. I'd highly recommend this helmet to a friend.

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GMax GM54S Modular Helmet Review

by - verified purchaser
We order a helmet which was too small and the light didn't work properly. When contacted them they send a replacement the same day I called. A soon as they received helmet they credited our card. I love the helmet with light in the back and would order another if I need it. Very please with product and treatment.

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Gmax 54s modular helmet reviews

by - verified purchaser
WOW! This is perfect for me. Does not squeeze my cheeks like my other helmets. Lots of vents to keep cool. Visors don't blur my vision with my prescription glasses.Sun visor flips down which is great, I don't have to wear sun glasses. If I want to I just use the clear shield. And the price is great. DOT approved.

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GMax GM54S Modular Helmet Review

by - verified purchaser
I really like this helmet having the sun shade built in excellent idea and love option to kick up nose guard been very happy with helmet! Thanks

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Well done helmet

by - verified purchaser
Great value. Love the look. Padding is pretty soft and the material helps keep the noggin cool in warmer weather. The sunshade works well and the visor removes easily. Sena comm set fits/works beautifully. Shell feels light and weight is probably average for a modular. Low noise and vents work well. Light in the rear is a smart feature, I think. My head measures just over 57cm and the medium is snug on my cheeks and a little loose front-to-back. Overall a strong value with lots of features.

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Great Helmet

by - verified purchaser
This is my first bike helmet, but I am definitely pleased with my decision to go with this helmet. I followed the chart and ordered the appropriate size and it fits perfect. Feels good and there are plenty of air vents. I've already been riding on a few warm days and it was plenty cool the entire time. Delivery was prompt and it was packaged well to prevent unnecessary damage in transit. For the price, I don't think you can go wrong...and it looks awesome (I went with Matte Black)

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Fantastic buy!

by - verified purchaser
Everything from the look, the fit, the function, to the quality would make me want to buy another one of these (and I plan to for my back-seater!) I love the built-in LED light since I ride to work in an area where morning fog is prevalent and I've gotten countless compliments on the looks of the helmet. The chin cover does a great job of cutting the wind chill along with my balaclava and the one feature I use more than I thought I would is the cool drop-down tinted visor which is so handy when riding on a cloudy morning when, later, the sun breaks through and you can have instant glare protection! The fit of the helmet is excellent and per the sizing chart, too. I will definitely be buying another one and will buy through Jafrum when I do!

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Awesome Helmet!

by - verified purchaser
Very good helmet. I bought it for my Buell Blast. The vents keep the visor from fogging up but I found if I ride my other bike that has a windscreen it does not get the air flow to prevent fogging. I added a blue tooth headset at a later date with out any issues. The sun visor is a plus as is the rear light. All in all I would purchase another if I need a second one.

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GMax GM54S Solid Helmet Review

by - verified purchaser
I love this helmet it's very comfortable and my wife is loving the safety features

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Great buy

by - verified purchaser
This helmet is great for the price. The features and style of more expensive modular helmets. Was pleased with the fit and fast service Would highly recommended!

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Best Helmet EVER!!!

by - verified purchaser
I was looking for a helmet that I could trust, that provided as many bells and whistles as possible... and the 54S was the ticket!! The vent system is AMAZING, the coolmax liner ROCKS...I live in FL, so airflow is an important feature. The sun visor is fantastic, the modular flip is fantastic when you are paying for parking at an airport, or at a drive thru .... and the addition of the remote brake light gives that extra bit of safety that you want. My kids want them now.... and I'm going to get them a helmet I trust everyday... I am a HUGE Gmax fan!!! Now for Jafrum.... FAST shipping, awesome service.... Buy from them - you'll be glad you did!!

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GMax GM54S Helmet Review

by - verified purchaser
This is a great helmet. Good air flow, speaker pockets inside the helmet, very good construction, and lightweight.

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GMax GM54s Nice Helmet. Great price.

by - verified purchaser
This is one nice helmet for the price! Light, comfortable and great looking. The modular design swings easy and stays in place when locked down. I really like the ease of the inner sun shield and the extra safety of the LED rear light. The inner foam is comfortable and the vents are air tight when closed on cold, windy mornings. Love it.

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Love this helmet!

by - verified purchaser
This is by far the best full face helmet I have ever worn at any price. The peripheral vision on this helmet is as good as a half helmet. I can move my eyes to see my tank mounted speedo where before I had to move my head down. I can actually feel the ventilation from the vents and the built in speaker pockets work great for my Sena SMH10. Operating the chin bar is the easiest & smoothest I’ve ever seen & the comfort is unreal! I can’t say enough about this helmet! And Jafrum’s customer service & delivery is great as usual.

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GMax GM54S Modular Helmet Review

by - verified purchaser
This helmet is one of the best that I have used. It is comfortable and came in great condition. The light on the back makes me more visible at night. I would recommend this helmet to anyone.

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Just awesome!

by - verified purchaser
Of all the helmets I've owned, this is by far the best one at a very reasonable price. If any of you have lost those expensive shades or misplaced them just when you need them and end up purchasing another pair to get by, STOP! The integrated sun visor is a must and you can't lose them . . . unless of course you lose the entire helmet! Easily flips down and off you go. It is very comfortable all around with excellent ventilation. The integrated break light really adds to the safety of riding, which will please mom's and wives alike. The Bluetooth box is easy to install but recommend you get a small piece of Velcro to attach the box internally within the brake light casing so there's no rattle when riding. Why it's not included I can't say but get a piece about 1 inch long. That's plenty. Seriously worth every penny. Thanks to Jafrum for pointing me in the right direction. Great customer service and the helmet arrived within 2 days -WITH FREE SHIPPING! Will definitely shop here again. Jerry from PA

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Browse 13 questions and 36 answers
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Why did you choose this?
Jafrum Store
G-Max is one of the strongest built modular helmets on the market.
Chuck . onApr 30, 2015
I learned that I like Modular helmet, and this one had a cool light on the back.
Ruben I onFeb 11, 2015
It was just what I was looking for at a great price!
Jamie M onMar 7, 2015
I really liked the first Gmax helmet I bought. It had the light in the back, too, but it was the solid face model. After a low side at 45mph scratched it up, I decided to try the modular model. Same great fit and more features than my previous helmet. This one seems to be a little noisier, and not as good in the airflow though. The face shield isn't as secure in the ratchet mechanism either, but that might be an adjustment issue? Good enough room to wear glasses under the sun lens.
Matthew A onFeb 6, 2015
Are the GM54S helmets all the same or is there a snowmobile helmet and a motorcycle helmet? and do you have a small gm54s with heated shield?
Manta Rider on Jan 7, 2015
Best Answer:The helmets are the same. The Shields are different. The dual and electric snow lens for helmets are generally not Street Approved.
Reply · Report · Justin PStaff on Jan 8, 2015
hi guys if the cheek pads are to tiht on me can they be changed and do you have these in stock?
A shopper on May 27, 2015
Best Answer:Yes, you can change to a smaller cheek pad. You should be able to find on website.
Reply · Report · Justin PStaff on May 28, 2015
I am looking to order. Question is, are the cheek pieces as tight as a Scorpion?
A shopper on Jan 28, 2015
Best Answer:Hard to say, which Scorpion?
Reply · Report · Justin PStaff on Feb 2, 2015
Where can I get replacement shields? Like if i wanted one that had a mirror effect or was just always tinted?
Caleb on Oct 7, 2014
Best Answer:Please follow this link and it will take you to the replacement shields.
Reply · Report · Bella HStaff on Oct 8, 2014
Does this helmet have some lower chin apparatus to keep wind from coming up from under the chin?
Clayton S on Dec 18, 2014
Best Answer:It has a mesh netting that helps a little, but honestly i don't recommend this helmet because it is very loud. If you don't know what i mean by loud, it makes a lot of noise from the wind when doing anything over 50mph
Reply · Report · William H on Dec 19, 2014
Does this have the electric shield?
A shopper on Oct 5, 2014
Best Answer:I had to do a little research to figure out what you are asking about. No, the helmet does not have an electric anti-fog shield. That being said, I have two of these and neither has a fogging issue. My wife reported one incident where the shield fogged up. We were in Florida in extreme humidity and her helmet fogged up as it began to rain. It was very hot and literally 100% humidity. So, good value for the money, no problems, and fairly comfortable. The air venting works and I would buy these helmets again. Good luck.
Reply · Report · Edd C on Oct 6, 2014
Is there a way to attach the J&M CB Headset other than clipping to the bottom edge? A lot of newer helmets have pockets on the outside of the helmets to attach to. I could not identify anything by the picture?

Chief on Sep 14, 2015
Best Answer:There isn't a built in place to add an intercom or headset into this helmet. Though there is enough space where I'm sure you can make it work. I've used earbuds inside my helmet to listen to a MP3 before.

Other than that, it is a Superb Helmet. I would recommend it to Anyone. I use it daily and Really Enjoy it. It's not heavy,Easy to remove the interior pads & liner for cleaning. The light on the back is Great for foggy mornings or for traffic. Plus the Price is Nice. I hope this helps
Reply · Report · David W on Sep 15, 2015
what speakers fit this helmet?
Keith A on Apr 6, 2015
Best Answer:The foam ear pieces come out of the helmet and small, maybe 1 1/2" round speakers go underneath. I use the headset speakers from my communicator and they work very well. Just rode cross country and listened to music all the way. The helmet isn't the quietest unit around but it is workable. Most important is to get a communicator with the fidelity you want.
Reply · Report · Edd C on Apr 7, 2015
how much it weigh?
mary t on Jan 5, 2015
Best Answer:I don't know the actual weight, but it seems fairly light compared to the fiberglass Shoie Helmet I used to have. This is an Excellent helmet. I am Very Happy with it. With all the vents it stays cool while riding in the summer.If it's too hot you can ride with the windscreen up or the whole chin piece. With the vents closed,ot seals well enough to ride in the winter without a draft. Very sturdy.I would recommend it to anyone.
Reply · Report · David W on Jan 5, 2015
I just asked that last question but used the wrong email. (Replacement shields)?
Caleb on Oct 7, 2014
Best Answer:Please follow this link at it will take you to the replacement shields.
Reply · Report · Bella HStaff on Oct 8, 2014
how do you measure for a helmet ?
A shopper on Feb 20, 2015
Best Answer:Circumference of the head
Reply · Report · Justin PStaff on Feb 23, 2015
can i get a replacement front air vent cover ?, I lost one on a ride
Gary F on Feb 2, 2015
Best Answer:We do not sell them on the site. If you got the helmet from us, please call our customer service to see if we can help you.

Reply · Report · Justin PStaff on Feb 3, 2015