If you don't want to use clamp plate mounting bracket or you have some problems with using it, you can use the 3M tape bracket to adhere it onto the helmet.

I did consider using the sticky mount, but wasn't sure how much confidence I would have it holding on long term through all weathers. In the city we've seen it fade out fast just going around the block with houses in the way, but on the open road ~1 km or so apart is usually no issue. Last intercoms I had were old dumb and cheap wired ones which were useless above 30mph, so the Lexin's are a revelation to me. The best headsets handle basic functions well, provide good speaker quality, work in the rain, and connect with other devices seamlessly.

I often forget to bring it with me, so I just use my motorcycle key to slide into the key slot and dismount it. I spent a week on the road riding through flash floods, tropical storms, extreme heat, baking sun, hungry swamp mosquito swarms, cell-tower dead zones, and raging gale winds. Then, one either of the 2 bridges, you press the intercom button and the unit will say, "scanning" and then "connected". Built-in 4k cameras and AI voice assistants are nice but sometimes you just need a digital detox away from all the device trackers and social media posts. We find we have to re-pair (not REPAIR, but re - pair lol) them often - they seem to 'forget' that they're paired with other helmets, but it's not a big deal to pair them up again - we've got it down pat now.

Pairing up 3 helmets for a ride with Dad one day was a bit fiddly, and it's a minor PITA that each rider MUST stay in formation 1 2 3, but. Decision time: With a lot of information read and a lot of Youtube videos watched, I decided to give the Lexin B4FM a try. If anyone with experience can tell me does the Lexin B4FM compare to something like a Sena or a Cardo? Yesterday we were set to go for an all day ride to get some pie, have a burger and let the girls do a little wine tasting in backcountry Ramona.Any similarly shaped small flat device should do if you don't have the original dismount key on you. But, then again, if you are looking for a ride off the beaten path or a way to disconnect from invasive technology and social media, the reliable and simple functionality of the B4FM is just what you need. So a small 1/4" channel was cut into the cheek pad plastic retained and voila, successful installation. You can do this if your only connected to one other unit, it's the bridge functionality that stops the Bluetooth, so just have 2 people doesn't require a bridge and then you get full functionality.