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GMAX GM11D Dual Sport Helmet

$109.99 (8% off)
4.30 out of 5 stars

This Purchase Qualifies For:

  • Description
  • Reviews (6)
  • Q&A (0)
  • Sizing Chart

GMAX is extremely excited to introduce the all new GM 11D Dual Sport Helmet series. This all new GMAX Dual Sport Helmet is truly an all season sport helmet. The 11D Helmet is loaded with features and designs normally found on other highly priced helmets, but delivered to you at a true GMAX competitive value.


  • Modern styling.
  • Can be quickly converted from a visor configuration to a visor-less configuration.
  • Side shield plate covers come as standard equipment in the box to use when configuring to a visor-less set-up.
  • Street / dirt configuration includes: clear shield, visor, and side plate covers for visor-less configuration.
  • Outer flip shield is completely hidden under the visor, and out of line-of-sight, when in the fully raised position.
  • Large eye port that accepts large goggles.
  • Visor is designed to allow airflow to pass uninterrupted across the helmet to virtually eliminate helmet-lift at highway speeds.
  • Shield can be fully raised or lowered when using goggles.


  • Maximum airflow is achieved thru shell / styrofoam and comfort liner vents.
  • Top, front, and jaw piece vents are a bold design that can be fully opened or closed with a "gloved" hand.


  • Modern graphics to appeal to a full range of customers.
  • Full helmet and visor graphic coverage.
  • Final clear coat covering for outstanding finish and durability.

Lateral styrofoam inserts:

  • Additional support inserts are located between the check pads and the shell.
  • Increased comfort and outside sound reduction.

Plush, removable washable interior:

  • Allows for adjustable fit and comfort that is second to none.
  • Tool-Less removal for easy cleaning.

Removable washable cheek pads:

  • Designed for comfort and reduction of outside noise.
  • Integrated speaker pockets.
  • Allows for custom fitting with optional sized cheek pads.

D.O.T Certified:

  • Lightweight thermo-plastic poly alloy shell.
  • Padded D-ring chin strap with a retention snap that secures excess chin strap length.
4.3 out of 5 stars (6)
4.3 out of 5 stars
5 star   2
4 star   4
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1-4 of 6
Overall 4 out of 5 stars
Sizing - Fit true to size?
Verified Purchaser
Location: Roseville, CA, USA
Good Helmet, Great Price

Just received the helmet so i haven't had a chance to ride with it yet but the fit is great. It is very comfortable and light weight. There is plenty of room under the visor to wear eye-wear and air flow through the helmet is good so i didn't have any issues with fogging (could be a different story on cold morning rides, we'll find out soon). All in all seems like a great helmet for the price!

Overall 4 out of 5 stars
Sizing - Fit true to size?
Verified Purchaser
Location: Cut Off, LA, USA
Overall good helmet

great style, fits good, and I like the overall performance of the helmet. will strongly consider purchasing the same helmet if I ever need a new one.

Overall 5 out of 5 stars
Sizing - Fit true to size?
Verified Purchaser
Location: Hawaii
The Best Dual Sport Helmet that I ever purchased !

The fit was right on the mark. Helmet works very well at highway speeds! Great ventilation and field of vision! Highly recommend this helmet .

Dual sporting in Hawaii with my new helmet
Overall 4 out of 5 stars
Sizing - Fit true to size?
Verified Purchaser
Location: North Idaho, USA
Good overall value

My only complaint is that in cold weather, even with the chin vent in the full open position, the visor still fogs up quite readily at slower speeds. Not a deal breaker though. This is an excellent helmet for it's modest price. VERY comfortable in both fit and long periods of use. 6 closeable vents make this helmet wearable even in the 100+ degree heat of the desert. I would replace it with another Gmax G11D if I lost mine. Definitely would recommend to a friend/colleague.

1-4 of 6
Total Questions (0)
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SizeHead CircumferenceHat Size
X-Small 21 1/4 - 21 5/8" (54 - 55 cm) 6 3/4
Small 22 - 22 7/16" (56 - 57 cm) 7 - 7 1/8
Medium 22 13/16 - 23 1/4" (58 - 59 cm) 7 1/4 - 7 3/8
Large 23 1/4 - 23 3/4" (59.1 - 60.3 cm) 7 3/8 - 7 5/8
X-Large 24 8/8 - 24 13/16" (62 - 63 cm) 7 3/4 - 7 7/8
2X-Large 25 3/16 - 25 5/8" (64 - 65 cm) 8 - 8 1/8
3X-Large 26 - 26 3/8" (66 - 67 cm) 8 1/4 - 8 3/8
SizeHead CircumferenceHat Size
Youth Small 19 11/16 - 20 3/16" (50 - 51 cm) 6 1/4 - 6 3/8
Youth Small/Medium 19 11/16 - 20 3/16" (50 - 51 cm) 6 1/4 - 6 3/8
Youth Medium 20 7/16 - 20 7/8" (52 - 53 cm) 6 1/2 - 6 5/8
Youth Large/X-Large 20 7/16 - 20 7/8" (52 - 53 cm) 6 1/2 - 6 5/8
Youth Large 21" (53.5 cm) 6 11/16


1. Measure your head size. To do this, pass a tape measure horizontally around your head at a height of about one inch above your eye brows. When done properly, you will have measured the largest part of your head.

2. Check your measurement with the helmet sizing chart and select the closest size. As the helmet may not always meet your head size exactly, and your head measurement may fall between two sizes, first try the smaller size.


1. Expand the helmet opening by pulling outwards on each chinstrap, and slide your head into the helmet. If you are unfamiliar with helmets you may be reluctant to pull the helmet down, as it may feel too tight. Even if the helmet is difficult to put on, please use the smallest helmet possible. The helmet should feel snug. If the helmet is not tight, it is too big for you. New helmets will break in and loosen slightly over time.

2. Once the helmet is on:

  • Check that the helmet inner lining fits snugly all around your head.
  • Check that the top pad presses on the top of your head.
  • Check that the cheek pads press up against your cheeks. When you open and close your mouth, you should drag your teeth along the inside of your cheeks.
  • Check to make sure that you cannot easily slide your finger into the helmet along the side of your temple.
  • Hold the helmet with one hand on each side. Without moving your head, try to move the helmet up and down, and side to side. You should feel the skin of your head and face being pulled as you try to move the helmet. If you can move the helmet around easily, it is too big. Try a smaller size. Please note that during this check, the chinstraps should be properly fastened.