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GDM DEMON Bluetooth Motorcycle Helmet with 4 Shields

GDM DEMON Bluetooth Motorcycle Helmet with 4 Shields

Regular price $234.95 USD
Regular price $249.95 USD Sale price $234.95 USD
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  • DOT FMVSS-218 certified
  • Bluetooth headset included
  • 4 shields included
  • 5-point ventilation
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The GDM DEMON Bluetooth Motorcycle Helmet with 4 Shields is the complete DEMON kit: the DOT FMVSS-218 certified DEMON full face helmet, the GDM HyperSonic Bluetooth 5.0 headset and 4 face shields for every kind of light. Take calls, stream music through the helmet speakers, hear GPS directions and talk rider-to-rider over the intercom, all hands-free.

  • DOT FMVSS-218 certified full face motorcycle helmet with a lightweight composite poly-alloy shell and rear spoiler
  • HyperSonic Bluetooth 5.0 headset included: HiFi stereo speakers and a noise-canceling microphone, with single-button control for calls, music, GPS and your phone's voice assistant
  • Rider-to-rider intercom with another GDM HyperSonic headset at up to 100 meters
  • Up to 12 hours of talk and music time, 120 hours of standby, waterproof
  • 4 shields included: clear, tinted, chrome and iridium
  • 5 points of ventilation at the chin, forehead and rear
  • Removable, washable liner and cheek pads, double D-ring chin strap
  • Helmet bag, USB charging cable and user manual included
  • Matte black, sizes S to XXL. The Bluetooth headset is not pre-installed; it mounts to the helmet with the included hardware.

Features & Specs

DEMON full face protection

The DEMON's aerodynamic full face shell is made of lightweight composite poly-alloy and finished with an aggressive rear spoiler. It's DOT FMVSS-218 certified for street, highway and daily commuting. A double D-ring chin strap with a strap holder keeps it secure, and a clearcoat finish protects the matte black paint.

Comfort and airflow

Five points of ventilation at the chin, forehead and rear keep air moving through the helmet. The hypoallergenic, antimicrobial nylon liner and cheek pads are removable and washable, so the helmet stays fresh on long rides.

Bluetooth headset with speakers and intercom

The included GDM HyperSonic Bluetooth 5.0 headset gives the DEMON helmet speakers, a microphone and an intercom, all controlled with a single button:

  • Make, answer and reject phone calls
  • Play, pause and skip music
  • Hear GPS turn-by-turn directions
  • Use your phone's voice assistant
  • Listen to FM radio
  • Talk with another rider over the intercom at up to 100 meters

HiFi stereo speakers and a wind-resistant, noise-canceling microphone keep calls clear at speed. The intercom works with another GDM HyperSonic headset: add a GDM HyperSonic motorcycle Bluetooth headset to your passenger's or riding partner's helmet.

Battery life

  • Up to 12 hours of talk and music time
  • Up to 120 hours of standby
  • Charges with the included USB cable
  • Waterproof for riding in the rain

4 shields for every kind of light

The flush-fit, side-coverless face shields are optically correct, compound-curved, scratch resistant and block UV rays. All four come in the box:

  • Clear: night, dusk and rain
  • Tinted: sunny days
  • Chrome: bright sun and glare, with a silver finish
  • Iridium: bright sun, with a blue mirrored finish

See our shield replacement guide for how to swap shields.

Specifications

  • Certification: DOT FMVSS-218
  • Type: full face motorcycle helmet with Bluetooth
  • Shell: lightweight composite poly-alloy, rear spoiler, clearcoat finish
  • Ventilation: 5 points (chin, forehead, rear)
  • Liner: hypoallergenic, antimicrobial nylon, removable and washable
  • Chin strap: double D-ring with strap holder
  • Shields: 4 (clear, tinted, chrome, iridium), flush-fit, scratch resistant, UV protection
  • Bluetooth: GDM HyperSonic, Bluetooth 5.0, HiFi stereo speakers, noise-canceling microphone
  • Intercom: 2 riders, up to 100 meters
  • Battery: up to 12 hours talk time, 120 hours standby
  • Sizes: S, M, L, XL, XXL
  • Color: matte black
  • Designed in: the USA

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Size & Fit Guide

GDM helmets run true to size. Every adult GDM helmet uses the same sizing.

GDM adult helmet sizes by head circumference
Size Head (cm) Head (inches) Hat size
S 55–56 21 5/8–22 6 7/8–7
M 57–58 22 1/4–22 7/8 7 1/8–7 1/4
L 59–60 23 1/4–23 5/8 7 3/8–7 1/2
XL 61–62 24–24 3/8 7 5/8–7 3/4
2XL 63–64 24 3/4–25 1/4 7 7/8–8
  • Measure: wrap a soft tape around the widest part of your head, about 1 inch above your eyebrows and just over your ears. Measure twice and use the larger number.
  • Between sizes? Choose the larger size.
  • Fit: a new helmet should feel snug all around with no pressure points. The pads break in after a few rides. If it moves when you shake your head, go down a size.
  • Head shape: GDM helmets fit an intermediate oval head.

Find my size See the full size chart

Wrong size? Exchanges are free within 30 days in the U.S.

Safety & Certifications

DOT Certified (FMVSS 218):
All GDM helmets meet or exceed DOT requirements for impact absorption, penetration resistance, and retention system strength. Every GDM helmet carries the DOT label on the back of the shell. What DOT certification means

Shell & Liner:
Durable outer shell paired with a multi-density EPS liner engineered to manage impact energy.

Visibility:
Designed to meet federal peripheral vision requirements for safe street riding.

See all DOT approved motorcycle helmets · How to spot a fake DOT helmet

Care & Warranty

Helmet Care  
Keep your GDM helmet in top condition:

  • Clean with mild soap and a soft cloth
  • Avoid harsh chemicals or solvents
  • Air‑dry only — no direct heat
  • Store in a cool, dry place away from sunlight
  • Replace after any impact, even if no damage is visible

1‑Year Limited Warranty  
Most GDM helmets include a 1‑Year Limited Warranty covering manufacturing defects in materials, components, and workmanship.
Wear‑and‑tear, cosmetic damage, accidents, impacts, and misuse are not covered.

To start a claim, email our support team with your order number and photos of the issue. Claims are reviewed within 2–3 business days.

Shipping & Returns

Fast Processing:
Orders ship from our Los Angeles warehouse the same day or within 1 business day.

Free U.S. Shipping:
Free standard shipping on U.S. orders over $99 (lower 48 states). Standard U.S. shipping usually arrives in 3–5 business days, depending on location.

30-Day Free Returns & Exchanges (USA):
You have 30 days after receiving your item to request a return. U.S. customers get free return shipping: once your return is approved, we email you a prepaid return label. Need a different size? Return the one you have and place a new order. U.S. exchanges also get free return shipping.

Return Eligibility:
Items must be unworn and unused, in new condition, with all original packaging. International customers are responsible for return shipping costs.

How to Start a Return:
Log in to your account, go to "My Orders" and choose "Request a Return". Checked out as a guest? Email info@ridegdm.com.

For full details, see our Return & Refund Policy.

What’s Included

Your GDM DEMON Bluetooth helmet with 4 shields comes with:

  • GDM DEMON full face helmet with the clear shield installed
  • 3 more shields: tinted, chrome and iridium
  • GDM HyperSonic Bluetooth headset (not pre-installed)
  • USB charging cable
  • Protective helmet bag
  • User manual
View full details
  • 5 stars: 3 (75%)
  • 4 stars: 1 (25%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
H
Hector Pacheco

It exceeded my expectations, I really like to recommend 100%.

B
Brian
Great Bluetooth Helmet

I checked out a bunch of Bluetooth helmets before buying this one, and honestly, it ended up being the best deal by far — great price, great performance. I saw some people complaining about the jog dial and the audio quality, but that hasn’t been my experience at all. The dial works exactly the way the instructions explain, and the sound is actually really good. I like my music loud, and I still had to turn it down a bit. The helmet comes loaded with features: calling, speed‑dial options, easy Bluetooth pairing — everything connected without any hassle. Overall, I’m really happy with it and would definitely recommend it.

S
Sigl Z
Good helmet, good price

It’s comfortable, fits my head well (I tried an XL first and ended up exchanging it for this size), isn’t too heavy, and comes with a solid set of features. The vents can be opened or closed, though I honestly don’t notice much difference. I get plenty of airflow from under the chin anyway, and I rarely use the removable chin curtain unless it’s really cold. The tinted drop‑down visor is one of my favorite features. I can ride with the clear visor open and still have eye protection and airflow as long as it’s not dark out — a really nice touch. The Bluetooth system works well overall. Every now and then it won’t connect to my phone, but cycling the helmet off and on fixes it. Once connected, it’s flawless. I wear earplugs to cut engine noise and can still hear the speakers clearly at highway speeds. Battery life has been excellent too — easily over eight hours per charge.

H
HOV YAMA
Honest opinion

Fits really well. I’m a big fan of the drop‑down sun visor — super handy. The audio’s solid, and the helmet itself looks good and feels like it’s built right. My only gripe is the instructions… they’re pretty vague, so I’ve just been figuring things out as I go. For the price, though, it’s a solid deal. I’m giving it 4 stars instead of 5 just because the directions could’ve been clearer.

L
Logan Theilen

My speakers aren’t working, they are plugged in and the speaker is charged. Not sure what to do

GDM

Make sure the speaker/mic wire are fully and firmly plugged into the unit. It may take some force pushing it in the first time. It should produce sound.