GMax GM54S Derk Modular Helmet

SKU
GMaxGM54SDerk
Rating:
94% of 100
List Price $199.95 Sale Price $139.97 Earn 6 Buck Back
Sale / Discount: $59.98  (30.00%)
In stock

Ships Same Day

+ -
You Earn $30 Buck Back
  • Fast Shipping
  • Low Price Promise
  • No Re-Stock Fees
You may also like

GMax GM54S Derk Modular Helmet.

No need to change a classic graphic on this lid. Gmax has thrown their derk graphic back on the Gm54s Derk helmet. This nice pinstripe style graphic is timeless, always looking good for your ride. 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 Derk is definitely worth a look.

Features

  • New inner flip tint sun lens.
  • Inner flip shield is easily raised of lowered with a lever located 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 the shield 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.

GMax GM54S Helmet Inner Shield Lens Removal




  1. Lower the inner shield by pushing the slider button located on the top of the helmet completely forward into the ?service position?.
  2. The service position is achieved by pushing on the rearward part of the slider button and sliding it forward over and past the molded in channel that it rides in.
  3. When in the service position, the attachment arm that connect to the inner shield will be visible.
  4. Take a small, thin, round tool, and push on the attachment arm pin to disengage the arm from the inner shield.
  5. When the center attachment arm is free from the inner shield, grasp and pull straight out from the helmets eye port on each side of the inner shield to remove.

To install the outer shield: reverse the removal process.

Note: The sides of the inner shield are simply snapped into place. No tools are needed to remove or install.

GMax GM54S Helmet Outer Shield Lens Removal




  1. Raise the outer shield into the fully raised position.
  2. Locate the side ratchet plates that secure the shield to the helmet.
  3. Push down on the pin that locks the ratchet plate retaining arm into the secure position.
  4. As you push down on the pin, move the retaining arm on the ratchet plate on the open position. The shield will release from the ratchet plate when the retaining arm is in the open position.

To install the outer shield: reverse the removal process.


Helmet Size 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
CIRCUMFERENCE HELMET SIZE
Metric cm Inches Letter Number
53 - 54cm 21-1/4" - 21-5/8" XS 6-3/4 - 6-7/8
55 - 56cm 22" - 22-7/16" S 7 - 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" XXL 8 - 8-1/8
65 - 66cm 26" - 26-3/8" XXXL 8-1/4 - 8-3/8
67 - 68cm 26-1/2" - 26-5/8" XXXXL  

Add-on:

You may hook up your helmet light to your brake light wirelessly. In order to do this, you must purchase the LED Brake Light Kit separately. The Light Kit pairs up similar to how Bluetooth pairing works. You can purchase brake light kits for the GM54, GM67 and the OF77 helmet models.

Reviews
Write Review
Write a Review to help your buddles and for a chance to win $100. Two winners monthly.

Items 1 to 10 of 246 total

Show per page
  1. Highly Recommended
    100%
    5/5

    Verified Purchaser - by Cool

    Posted on

    100%
    Bang for the Buck
    100%
    Fit
    100%
    Features
    100%
    Comfort
    100%
    Style
    The GMAX is everything I hoped it to be the fit and comfort of the helmet is amazing. It's a little heavier than what I'm used to in a helmet but the many other features outweigh that and the lighting is awesome I've even received much interest in the Gmax and I highly recommended it.
  2. Very Pleased
    100%
    5/5

    Verified Purchaser - by Theodore

    Posted on

    100%
    Bang for the Buck
    100%
    Fit
    100%
    Features
    100%
    Comfort
    100%
    Style
    Helmet came very quickly in the mail, staff was very helpful when I called and asked questions before I ordered. I am very pleased with the helmet and I am looking forward to doing more business with Jafrum.
  3. GMax GM54S Solid Review
    100%
    5/5

    Verified Purchaser - by Sam

    Posted on

    100%
    Bang for the Buck
    100%
    Fit
    100%
    Features
    100%
    Comfort
    100%
    Style
    This helmet is a replacement for my previous GMax 54S. That one got dropped, Overall, though, it has been a good modular helmet. Replacing the face shield is as easy as any other helmet I've had. It is reasonably priced, and yet has good quality components. The light on the back of the helmet is a bit of a gimmick, and I never use it. Sometimes the air vents whistle slightly when open, but it's not bothersome. Obviously, I liked the original enough to buy another one.
  4. Great Helmet
    100%
    5/5

    Verified Purchaser - by Kim

    Posted on

    100%
    Bang for the Buck
    100%
    Fit
    100%
    Features
    100%
    Comfort
    100%
    Style
    We are very happy with the helmet. Great look, great features, great fit.
  5. Very Pleased
    100%
    5/5

    Verified Purchaser - by Cadprof

    Posted on

    100%
    Bang for the Buck
    100%
    Fit
    100%
    Features
    100%
    Comfort
    100%
    Style
    I was in the need for new helmets and did an Internet search. I have owned GMax helmets before and was interested in the GM54S Modular. I watched the video on the Jafrum website and was immediately sold on that model. I purchased two and am very pleased with the construction, ventilation and the ability to wear as a full face or flip up the shield and wear a 3/4 helmet. The built-in sun visor is a plus, and as a built in safety device, the red light built into the back of the helmet is a fantastic idea. Am very pleased with the helmet and the pricing by Jafrum. Anyone who is interested in a modular helmet should definitely look at purchasing the GMax GM54S.
  6. GMax GM54S Modular
    100%
    5/5

    Verified Purchaser - by J. Hildreth

    Posted on

    100%
    Bang for the Buck
    100%
    Fit
    100%
    Features
    100%
    Comfort
    100%
    Style
    Excellent Helmet-Great Fit. Impressed with Red light feature on back of helmet. This is mysecond Gmax Helmet.
  7. GMax GM54S Modular
    80%
    4/5

    Verified Purchaser - by Wyostar

    Posted on

    80%
    Bang for the Buck
    80%
    Fit
    80%
    Features
    80%
    Comfort
    80%
    Style
    I have worn full coverage helmets from my earliest days riding as a kid which was a long while back. This is my first modular helmet and so far I'm very happy with it. I did measure my head as described on the page and ordered accordingly. I did have to send 1st helmet back as it was too small, that was on my dime which I wasn't too happy about because I did measure as instructed to on the page, hence the 4 star rating. I ordered next size up and the fit is much better. I just completed a two day ride in North Carolina on the Blue Ridge Parkway a couple of weeks ago , my first time using the helmet, and found it easy to use and comfortable. I really like the ability to lift and lock the front up; made stopping, talking, grabbing a quick drink so much easier and pleasant. I just ordered my wife one as she liked what she saw and wanted to try one out herself.
  8. GMAX GM54S Helmet Review
    80%
    4/5

    Verified Purchaser - by Bob Weir

    Posted on

    80%
    Bang for the Buck
    80%
    Fit
    80%
    Features
    80%
    Comfort
    80%
    Style
    I saw this Helmet two years ago and I thought it looks awesome. I wanted one but did not have my bike on the road. Well this year I put it back on the road and decided to get the helmet. I may not of used the original site I saw the helmet at but, decided to use Jafrum. I am glad I did. It was delivered on time. No damage and was everything it claimed to be. I got the flat black model and the finish feels like that rubberized finish you sometime fine on certain item. Can't explain it but I love it. I have an older shoie flip-up helmet and it was a large. This helmet I ordered in a medium after researching how a helmet should fit. It fits fine. Light and comfortable. The only con is how to get the sticky glue off the pop down shield where the UV sticker was.
  9. GMAX GM54S Helmet Review
    80%
    4/5

    Verified Purchaser - by Robert W

    Posted on

    80%
    Bang for the Buck
    80%
    Fit
    80%
    Features
    80%
    Comfort
    80%
    Style
    Really like the features of the Gmax GM 54S. But I must say being a senior (over 70) the helmet is really heavy for me. I guess I'm accustomed to a lighter helmet.
  10. GMax GM54S Helmet Review
    100%
    5/5

    Verified Purchaser - by Maxwell

    Posted on

    100%
    Bang for the Buck
    100%
    Fit
    100%
    Features
    100%
    Comfort
    100%
    Style
    Very impressed with the fit and fish. Pros: Very comfortable, ventilation is nicely adjustable. Sun shield works great. Visor optically good. LED is a nice bonus. Cons: A bit eavy, a bit noisy, a bit easy to fog if you don't crack the visor.

Items 1 to 10 of 246 total

Show per page