Most riders buy a couple of these and then put the second unit in a drawer. This LEXIN B4FM audio kit is for those buyers, and for solo riders. It is the proven B4FM hardware in one unit, with both microphone styles included. One caution up front: the well-known 4.3-star rating belongs to the 2-pack listing, not this one.
Specs and Value
Bluetooth headsets for cheap cut off their connections when multiple units are in close proximity. But these units work together and keep low enough latency to prevent long delays and poor quality conversations (i.e., your conversation doesn't sound like a bad cell phone call). Thirty-six mm Mylar co-axial speakers are thin enough to fit in the hole in a helmet where your ear rests but provide enough air flow to be audible over road noise. Digital signal processing (DSP) and circuit voice cancelation (CVC) noise reduction eliminate wind noise, so your riding partner can hear you not the highway.
Price-wise it's easy. You are getting one unit with the same 10-way intercom functionality, ability to share music, and access to FM radio as the people that are buying the two-packs and doing it at near half the cost.
Ten riders can connect, though the seller notes 4 is the sweet spot. Speed isn't an issue. Wind noise cancellation works at speeds up to 120 km/h (above most countries' highway limits).
This is not a feature showcase. It is a practical purchase.
Two Mics, All Helmet Types
Why would someone buy this listing vs the individual unit? Due to the bundled audio package. The buyer gets a boom mic for open-face helmets and a button mic for full-face helmets. So, a rider could just switch between helmet styles and continue to use the same device.
The button microphone is designed to sit under the foam padding of a full-face helmet with no pressure points (important when you're going to be wearing a helmet for an extended period of time).
It is water-resistant with an IP67 rating. Sealed ports, along with an operating temperature down to -22°F mean you can ride in rain, snow or accidentally drop your device in a puddle and nothing will happen to it.
The 800mAh battery runs about 15 hours of talk or music, enough for a full travel day without hunting for a charger.
Range and Battery Life
Range is listed as 1.2 miles. However, realistically it will probably be less than that. Bluetooth signal strength drops due to obstacles such as hills and buildings between you and another rider. This is not a mesh network and neither does it state it is.
For example, if you had a group of four riders lined up and were trying to communicate with One another, the advertised range is genuinely sufficient.
The 7-plus day standby solves a quiet problem. Weekend riders who pull the bike out twice a month still find a charged unit waiting.
Pressing the power button twice allows you to share music with a passenger without either rider touching a phone at speed.
What Amazon Reviewers Say
When looking at products similar to this product, the twin 2-pack listing shares identical Qualcomm hardware and speakers, but its 4.3-star record cannot stand in for this product's own history. What this listing's buyers report: easy install and clearer audio than expected at speed.
Reviewers also agree that all LEXIN units can be connected together regardless of manufacturer. This is great news since many groups consist of riders who have bikes manufactured by different manufacturers.
Some reviewers wrote that large groups (greater than 4 riders) did not function as well as stated in advertising. That is a Bluetooth limitation, not a LEXIN one. No matter what brand you choose, none of the non-mesh systems within this price range will work any differently.
Overall, reviewers generally agree that the hardware is reliable at a fair price, with one caveat covered below.
Pairing it into a group. The most common buyer question is how this unit joins an existing setup. Universal pairing covers all LEXIN models: G2P, GTX, G16, MeshCom, Novus, and essentially all other non-LEXIN style motorcycle communication systems.
Music sharing and voice commands stay between LEXIN units.
There is one thing you should remember before participating in your first multi-device group ride. Bluetooth intercoms connect rider to rider in a chain, so position in line matters. A unit in the middle bridges two connections and hears everyone. A unit at one end depends on its neighbor staying in range. Worth asking before a first group ride.
Charging runs over standard USB-C and takes about two hours. With 7-plus days of standby, a Friday-after-the-ride charge habit never leaves you with a dead unit.
Who Should Buy This
Buy this if you ride solo and want calls and music without paying for hardware you will never use. Buy it if your group already runs LEXIN and you are the one catching up.
The dual-mic bundle makes it the right pick for riders who switch between open-face and full-face helmets.
Skip it if your group needs true mesh networking with mile-wide coverage, or app-based channel management. This is a straightforward Bluetooth unit. And if you actually need two units, the 2-pack listing is the better math.
Compare every option on the motorcycle intercom table, and browse more reviews and guides. You can also see the current price on Amazon for this unit.
A final word on expectations. This is the single-pack B4FM with the full audio kit, and its value case is narrow and clear: one proven headset, both mic styles in the box, for riders who do not need two units. The 4.3-star record belongs to the 2-pack listing, this listing's own review base is smaller. Same hardware, less buyer history. If your group already runs LEXIN, adding one more unit is exactly what this bundle is for.
Frequently Asked Questions
Does this include one unit or two?
One. This is the single-pack listing with an audio kit bundle. The 2-pack is a separate listing.
What is the difference between the boom mic and button mic?
The boom mic suits open-face and flip-face helmets. The button mic mounts inside a full-face helmet's padding. Both are included.
Can it pair with other LEXIN models?
Yes. Universal pairing covers G2P, GTX, G16, MeshCom, Novus, and most non-LEXIN headsets.
How many riders can connect?
Up to 10 in intercom, though the listing notes performance is best around 4.
Is it really waterproof?
IP67 with sealed ports, rated to -22°F. Rain and snow riding are covered.