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K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom - Matte Black - Clear Visor / S is backordered and will ship as soon as it is back in stock.
Your favorite playlist. Your riding crew. Every mile, connected. The K4 combines a modular helmet with an included Bluetooth + Intercom headset for music, calls, GPS directions, and communication with 2–8 riders.
From your daily commute to weekend group rides, enjoy flip-up convenience and stay connected along the way.
✓ Bluetooth + Intercom headset included — no separate purchase needed
✓ Stay connected with 2–8 riders
✓ Modular design for added convenience at stops
✓ Dual-visor design for changing light conditions
✓ Adjustable ventilation for everyday comfort
✓ Backed by a 2-year warranty
Everything you need. In one helmet.
Your next helmet should come with peace of mind. From finding the right fit to support after an accident, Gear Rider has your back.
✓ Free Crash Replacement
If your helmet is damaged in a riding accident, our crash replacement program helps you get back on the road.
✓ 2-Year Warranty
Your K1 is backed by a two-year warranty.
✓ Free Liner Size Exchange
Fit needs adjusting? We’ll help you find the right liner size.
✓ Real Rider Support
Questions about sizing, your headset, or your order? Our team is here to help.
Your playlist. Your crew. Your kind of ride.
Music for the miles ahead. GPS directions when you take a new route. A quick conversation with your riding crew. The K4 comes with a Bluetooth + Intercom headset included, bringing music, calls, navigation audio, and communication with 2–8 riders into your helmet.
Make every stop a little easier.
Fuel stops. Coffee breaks. A quick chat before heading out again. The K4’s flip-up chin bar lets you open the front of your helmet without taking it off. A small convenience you’ll appreciate every time you pull over.
One helmet. A whole new look.
Transform the K4 into an open-face configuration with its extended visor. Enjoy a more open feel, with a large shield that helps deflect wind and adds a distinctive finish to your setup.
Modular versatility. Open-face freedom. Your style.
Size guide
A great ride starts with the right fit. Measure your head, then match your circumference to the chart.
Head circumference
| Size | CM | Inches |
|---|---|---|
| S | 54 - 56 | 21.25 - 22.04 |
| M | 57 - 58 | 22.44 - 22.83 |
| L | 59 - 60 | 23.22 - 23.62 |
| XL | 61 - 62 | 24.01 - 24.40 |
| 2XL | 63 - 64 | 24.80 - 25.19 |
| 3XL | 65 - 66 | 25.6 – 26.0 |
Measurements refer to head circumference, not helmet dimensions.
Yes. The K4 includes the intercom module, speakers, and microphone — no separate headset purchase is needed. The module attaches to the outside of the helmet.
Yes. Pair the headset with your phone via Bluetooth to stream music, answer calls, and hear navigation audio. It supports Bluetooth pairing with iPhone and Android phones.
Yes. The intercom allows direct, hands-free communication between compatible headsets without a phone connection. It supports 2–8 riders, with up to 500 meters of range.
The included intercom option does not pair directly with Sena, Cardo, or other intercom brands for rider-to-rider communication. It connects with the same intercom model. Check that everyone in your group uses compatible units before ordering.
Yes. The K4 can be converted into an open-face configuration using its extended Aurora tinted visor, giving you a more open feel with a large face shield.
Approximately 1,700 g (3.75 lbs), including the intercom module.
The K4 has an intermediate oval fit. Check the size guide and measure your head circumference before choosing your size.
Yes. The K4 is designed to accommodate prescription glasses. Comfort can vary depending on your frames and helmet fit.
We offer a free liner size exchange to help adjust the fit. You can also return the helmet within 30 days for a size exchange or refund, subject to our return policy. Return shipping costs are paid by the customer.
The K4 comes with a 2-year warranty covering defects and system malfunctions. Contact support@gear-rider.com with your order number for help.
Overall rating: 4.4 / 5 from 64 reviews.
This is my second helmet. I've purchased through gear Rider and both of them. I've been very pleased with no complaints very comfortable fits just right, and I love having the music while I drive built into the helmet
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Great fit and design!
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
The helmet is nice but runs big. I have an Icon airflight in medium and decided to go small with this purchase. Unfortunately I have to wear a bandana or head wrap for it to fit snug. The audio works as it should but isn't loud enough at highway speeds to hear. The helmet looks cool and is comfortable, the modular portion is pretty neat and works great. Overall I would suggest this helmet if you run a stock exhaust and if you find the perfect fit. Unfortunately they dont make it any smaller so I'll just have to be okay with it. As far as the audio goes just know that if you have an aftermarket exhaust you won't be able to hear your music.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
love the helmet I love all the functions on the helmet. Can change the look of the helmet.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Impressed Highly impressed with the quality of the helmet. I have a large forehead so the XL is still snug at the forehead but it fits nicely. The Bluetooth/intercom system works great. I wish the speakers were a little bit better and the microphone be a little bit longer for closer access to the mouth, but it works. My wife and I both have a helmet and we honestly get close to a half mile coverage on it. Shipping was actually pretty quick considering. The music plays at a low volume but it is sufficient at 80mph to still hear and talk. All in all, an investment well worth the price.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
This helmet is solid! Great helmet overall! Great features!
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
BT hemet I have always had a Harley style helmets DOT, but not full face This helmet has changed my outlook completely. It is so lightweight and comfortable. It is amazing. The comfort and ease abusing the amenities of helmet, comes with our barn on the best.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Riding capability.Very good I was wearing this helmet, when a car turned in front of me, most definitely did its job. They replaced my helmet for making a comment on one of their sites on Facebook. That that tells me they care about the customer. only thing is I wish they would start sending the helmets in a box and not wrapped in the bubble. The replacement day scent Was damaged From shipping. So I am waiting for them to send me the part to replace on the helmet that got damaged during. Shipping process, I love the headset. Easy to set up clear quality sound and hearing. Trust me , my 131 is pretty loud and I was able to hear the music clearly.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
K4 Modular Helmet with bluetooth First off, the helmet is beautiful. the colors match the photos, and the shape and weight are perfect. My first critique is the padding inside. its on the thin side so comfort is compromised. My other critique is the speakers. In town riding is fine but once wind comes from speed or road, you can barely hear. Overall I gave it a 4 because the price point vs product expectations were met. If it cost more, i would've been disappointed.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Excellent great value! I purchased this hemet from Gear Rider and was very satisfied with their customer service and also the excellent pricing. Highky recommend and will definitely do business with them again.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Good product and great service
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Best Value Out There !! just got mine 2 weeks ago , love it ! there is a little wind buffering above 60 mph from the bluetooth device , but i can still hear my music , the speakers are fine (not the loudest) but you still want to hear traffic, your bike, sirens. everything works as it should and is spot on ! if you want a great helmet for a great price then look no further ! this is it !
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Does not fit
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Store owner replied: We’re sorry the fit wasn’t right! Don’t worry, we can send you a prepaid return shipping label or a replacement liner for a better fit. Please contact us at with your order number, and we’ll get this sorted out.
it's a helmet I guess. I've had a few cheap and expensive helmets and this one is particularly thin. feels like it might split if I dropped it on the floor from chest hight let alone an actually crash. the plastic "aro" on the back came unattached and for good reason seeing that it brakes almost instantly. then there's the com system that sounds like an early 2000s flip phone allowing me to hear literally nothing wen riding a stock Honda Grom down the road. but I suppose if your like me in currently not caring about the safety as much as not getting a ticket it's not necessarily uncomfortable or anything and dosnt look half bad so for a budget helmet it's all right.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Very good helmet Very nice looking comfortable lightweight helmet and Bluetooth intercom is very clear very satisfied with my purchase will be ordering one more helmet for my wife I'll give it 5 stars.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Came w no directions for how to connect it. Worthless to me as a result and unmade the mistake of buying two!
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Store owner replied: We’re sorry the instructions were missing. Please contact us, and we’ll send you video tutorials showing exactly how to connect and use it.
Head set is really quiet, not a sena peiece so theirs no way to amplify the audio, but, the wind noise is super quiet, the sizing is perfect, the visor is tight in its gears so it doesnt flop around at all, would buy again but the Bluetooth is the only bad part
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Love the look and fit of the helmet great Bluetooth and intercom makes it easy to talk with my son when riding
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Great fit awesome helmet with intercom and Bluetooth
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Nice!!!
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Too big for a medium, cheap materials..no way this would protect my skull
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Helmet is too big and has tons of wind noise even at lower speeds. Not bad quality, and the Bluetooth works fine, just can’t hear it because of the wind.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Great product Helmet is great easy switch visors and works well
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
i love it! it fits even better than my previous one. not too tight but also not too loose either!!
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Don Excellent helmet fits. Perfect sound quality is excellent. Highly recommend.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Helmet is exactly what i wanted. Their measurements are exactly to fit size. Im going to get great use of this helmet. I even bought my wife the same one. Shipping is a little long but definitely worth the wait . It roughly took 20 days to receive it. But so worth it
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Terribly made, the bluetooth is so quiet you can barely hear it. So much wind noise it’s ridiculous. Worst helmet ive ever bought. Does look good but a n absolutely terrible helmet!
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Modular helmet review The helmet fits well and came with everything as promised. The instructions for the coms was there but not very good. There were no instructions for the additional visor, parts, and attachment for the back of the helmet. It is a very nice looking helmet and a good value for the price.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
K4 Helmet Took some time to trim the liner so it wouldn't dig into your forehead. Fit and finish is OK. Shipping time from China was quite long. Overall satisfied with the purchase.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
2 thumbs up I have to be honest. I didn't know what to expect. I tried to buy a halmet before from a out of the country source and I lost my money. I tried gear and they came through. The bluethooth clamp was broke when I received the halmet. I informed them and got a quick response and with in a few days got a message the replacement was on the way... Great customer service. Will be ordering more product. Great Job!!!!!
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Light helmet It’s comfortable and light enough to wear on long trips. The Bluetooth works great. Fit and finish is nice as well. Over all a great value
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
New helmet Shipping took a few weeks but overall great experience helmet showed up with minimum assembly needed only down side is speakers could be a little louder
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
K4 helmet Well built helmet
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
My first modular helmet I am very pleased with my new helmet. This is the first modular helmet I have ever owned. I ordered a medium, it was a little loose so I wrote customer service and they are sending me a free small insert for a better fit of the helmet. I did not expect the helmet to be coming out of China when I ordered it but it arrived quickly and extremely well packaged. I have received a lot of compliments on the helmet. The only other thing I need to to do is make Styrofoam inserts for the speakers to bring the speakers closer to my ears. Although I can hear music with no issues, phone calls are slightly harder to hear. This will be a simple task based on a video review I had watched prior to ordering the helmet. So I was expecting to possibly have toake this adjustment. All in all, I would definitely recommend this helmet and the company.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Awesome Bluetooth works great helmet is very comfortable. Wouldn’t change it for the world. The only thing is that you should have an option if you want to clear screen or dark screen on your helmet besides that everything’s all good.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Overall good helmet I bought this for my first helmet. I ordered a small based on the measurements of my head but the helmet is still a bit loose. I will have to add some extra padding so it fits more snug. The speakers also aren’t very loud when you connect to Bluetooth and listen to music, they are fine if you’re in a phone call. So I will try and modify to move the speakers closer to my ears!
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Excelente helmet Exelent product for the process
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
K4 review Opinion on K4 helmet . Helmet seems to be what it’s advertised to be. Intercom Volume really needs to be addressed to make it a little louder when riding. Probably would be good to make clip for intercom easier to install.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
K4 Helmet The K4 helmet is a nice helmet. We're having two issues with the helmet however. My head measures at 23 in . And the sizing doesn't accommodate 23 in. I could have chosen medium or large. I ended up choosing the large because I can always get extra padding . But the helmet doesn't come with any extra padding that would be thinner or thicker so you can adjust for the size difference. Also I got the tinted windscreen but when the Sun hits it it'll give you Shadows making it hard for you to be able to see so I've had to order the clear windscreen.
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
Just received Well so far it is a decent helmet. The clip for the intercom doesn’t fit all the way down to the rim of the helmet. But it fits good
K4 Intercom Modular Helmet with Bluetooth – 2-8 Riders Intercom
The K4 Modular Helmet is a smart, all-in-one solution built for riders who demand comfort, protection, and advanced connectivity. With its integrated Bluetooth headset and aerodynamic design, it offers the freedom to ride, communicate, and stay focused — no matter the distance.
3-in-1 Riding Modes
Switch between full-face, flip-up, or Open Modular Visor Mode.
Impact-Resistant Construction
Durable ABS shell + EPS foam liner + breathable, removable interior padding.
Ultra-Wide 190° Field of View
Optical-grade PC visor provides sharp, panoramic vision on every ride.
Anti-Fog Compatible Visor
Supports anti-fog inserts to maintain visibility in cold or humid weather.
Built-In Sun Visor
Internal tinted lens protects against glare without the need for sunglasses.
Aerodynamic Shell Design
Wind-tunnel tested to reduce lift, noise, and drag at high speeds.
Multi-Channel Ventilation
Chin, top, and rear vents ensure continuous airflow for all-day comfort.
Bluetooth-Ready Interior
Pre-installed speaker pockets for seamless headset integration.
500m Rider-to-Rider Intercom
Supports real-time group chat for 2–8 riders within a 500-meter range.
Bluetooth 5.4 Chipset
Delivers fast, stable connections with lower power consumption.
30H Battery Life | 1000H Standby
Long-lasting performance with 5–7 hour charging time.
Advanced Noise Cancellation
Reduces wind and engine noise for crystal-clear audio.
→ Lowers the need for high volume, protecting your hearing long-term.
Dual-Device Pairing
Connect two devices (e.g., phone + GPS) and switch between them automatically.
Voice Assistant Support
Compatible with Siri and Google Assistant — play music, get directions, make calls hands-free.
High-Fidelity Audio at High Speed
Engineered for rich sound quality that cuts through road noise.
Smart Call Control
Choose automatic or manual call answering via one-touch controls.
| Size | Head Circumference (inches) | Head Circumference (cm) |
|---|---|---|
| S | 21.7 – 22.0 in | 55 – 56 cm |
| M | 22.4 – 22.8 in | 57 – 58 cm |
| L | 23.2 – 23.6 in | 59 – 60 cm |
| XL | 24.0 – 24.4 in | 61 – 62 cm |
| XXL | 24.8 – 25.2 in | 63 – 64 cm |
| 3XL | 25.6 – 26.0 in | 65 – 66 cm |
Color
Size
