LEXIN B4FM Motorcycle Bluetooth Intercom (10-rider group system) with Music Sharing & IP67
Product description
The essentials
If you ride with a club, tour with mates, or regularly bring a pillion along, the LEXIN B4FM Bluetooth intercom is built around group communication rather than just one-to-one chat. On paper, it’s a 10-rider intercom setup, though it’s also described as being optimised for 4 riders in a group for peak performance—so it’s worth thinking about how you actually ride most weekends.
It also brings audio features into the mix: there’s music sharing (two riders syncing the same soundtrack in close-range situations), built-in FM radio, and stereo speaker output. For noise, the headline is DSP/CVC noise cancellation, aimed at keeping voices clear at speed. It’s an all-weather, IP67-rated unit too, which matters in the UK where “light rain” can turn into something more determined.
Key features that affect everyday riding
The strongest reason to consider the B4FM is the combination of group intercom capacity and rugged design. A fast, stable Bluetooth connection is mentioned, and the range is stated as 2000 m (1.2 miles). For riders who often set off in a pack, that’s the sort of figure you’d hope means fewer drop-outs when you’re spreading out a bit on the road.
Audio-wise, the setup is designed to keep conversations understandable while still letting you enjoy music. The built-in FM radio and high-fidelity stereo speakers are there for the “I still want something playing, but I need to hear people too” moments—like short bursts on busy A-roads before you’re back on quieter stretches.
There’s also voice control support, with compatibility for Siri and Google Assistant via your mobile phone. That’s the kind of hands-free convenience you’ll notice most when you’re stopped at lights and don’t want to be fumbling with controls.
One practical limitation to keep in mind: music sharing is flagged as ideal for rider-to-passenger or close-range riding. So if your idea of “music sharing” is two bikes far apart, you may find it less reliable than the headline feature suggests.
What to know about noise cancellation
The intercom uses DSP and CVC noise reduction technology, with the claim that voice clarity remains good up to speeds of 120 km/h (75 mph). In real terms, that’s targeting exactly the problem most riders complain about: wind roar and engine noise swamping speech.
No noise system is magic, though. Depending on your helmet, jacket fit, and riding position, you may still get moments where voices sound more distant—especially in heavier wind or if you’re running without a good seal around the helmet. Still, if you ride at motorway or fast-road speeds often, this is clearly aimed at those conditions.
Waterproof confidence for UK weather
With IP67 waterproof rating, the B4FM is positioned as a headset you can take through rain, snow, and cold conditions. The temperature note goes as low as -26°C (-15°F), which is an extra detail that suggests the casing is meant to cope with winter riding rather than just “light drizzle”.
If you’re commuting or doing all-season tours, IP67 is one of those specs that reduces the amount you think about weatherproofing. It doesn’t eliminate the need for basic care (like wiping down after muddy rides), but it does shift the product in the direction of “ride first” rather than “protect it like a gadget”.
Tech summary (so you can compare properly)
Tech specs
- Name: LEXIN B4FM Motorcycle Bluetooth Intercom
- Type: 10-rider group intercom system with music sharing
- Range: 2000 m (1.2 miles)
- Riders supported: up to 10 riders (optimised for 4-rider groups for peak performance)
- Noise cancellation: DSP/CVC noise reduction
- Claimed clear voice at speeds: up to 120 km/h (75 mph)
- Music sharing: synchronised music for two riders (ideal for rider-to-passenger or close-range biking)
- Audio: high-fidelity stereo speakers and built-in FM radio
- Voice assistant support: Siri & Google Assistant (via mobile)
- Waterproof rating: IP67
- Temperature note: down to -26°C (-15°F)
- Battery life: 15 hours talk/music, 350 hours standby
- Helmet microphone options: includes interchangeable microphones (Boom & Button)
- Helmet fit coverage: Full Face, Flip-up (Modular), Open Face, and Motocross helmets
Getting the most from it (and where it may fall short)
If you mainly ride solo and only occasionally talk to one passenger, the B4FM can still work—but you might be paying for a group-focused system you don’t fully use. It’s the sort of headset that makes more sense when group comms are part of your routine, not a rare event.
On the other hand, if you ride with a club, join rallies, or regularly do weekend tours with several bikes, the “hub” concept fits. Group setups are always a bit of a compromise between connectivity and simplicity, but the B4FM’s stated focus is on stable connections and clear voices, which is exactly what you want when you’re navigating together.
A micro example of real use
Picture a Saturday morning ride with three other bikes. You’re not always travelling tightly in a single line, and speeds vary between town roads and faster stretches. The value here is being able to keep the group call going while still hearing your intercom clearly over road noise, and having music or FM as a layer when you’re riding without needing to talk every minute.
What’s included and fit considerations
LEXIN includes interchangeable microphones (Boom & Button), which is a big practical detail when you don’t want to wrestle with an awkward setup. The listing states support for common helmet types—Full Face, Flip-up (Modular), Open Face, and Motocross—so you should be able to choose a mic style that suits how your helmet sits and how you talk naturally.
If you’ve got very niche helmet shapes or don’t have the patience for correct positioning, any intercom will feel worse. But here, the included mic options are at least a sign the product is meant to be adaptable.
Is it worth it?
It’s a strong pick if you want an intercom designed for group riding (with a stated 10-rider capability, and optimisation for 4-rider groups), you care about clear speech at speed thanks to DSP/CVC noise reduction, and you want the added comfort of IP67 waterproofing for UK weather.
You may want to skip it if most of your riding is solo, you only need basic one-to-one communication, or you mainly expect music sharing between bikes that are often far apart—because the description itself points music sharing most towards rider-to-passenger or close-range riding.
If you prioritise weekend tours, commuting in variable weather, and reliable voice clarity without turning every ride into a technical setup, the B4FM looks like it matches that use case.
Quick FAQ
Quick FAQ
How many riders can the LEXIN B4FM handle?
The system is described as supporting up to 10 riders, with peak performance optimised for 4-rider groups.
Does it have music sharing?
Yes, it includes a music sharing feature, described as ideal for rider-to-passenger or close-range biking.
Is it suitable for UK rain?
It’s IP67 waterproof rated and is positioned for all-season riding, including heavy rain and snow.
Will the voice still be clear at motorway speeds?
The listing claims clear voice clarity up to 120 km/h (75 mph) using DSP/CVC noise reduction, but real-world results can still vary with your helmet and riding conditions.
What helmets does it fit?
It’s stated to work with Full Face, Flip-up (Modular), Open Face, and Motocross helmets, using the included interchangeable microphones (Boom & Button).