A helmet intercom can be used for any motor sport that requires wearing a helmet. They are typically used for motorcycle intercoms. Whatever you use a helmet intercom for, they turn a solitary experience into a shared experience.
You can get cheap helmet intercoms or you can get expensive ones. The difference lies in the features you get. If you spend under $100 you won’t likely get noise reduction, which can be an important feature. The faster you ride, the noisier it gets so noise reduction is good to have.
Another key feature is the ability to communicate bike-to-bike. Obviously some sort of wireless technology has to be used to do that. You can get intercoms that communicate using small two-way radios that you can buy almost anywhere. The downside of these is there is lots of traffic on these radios in heavily populated areas. If you are riding with a group, then these let you have multiple people talking together.
Another technology you can use is BlueTooth. The positive part about it is that you can talk without interference, but the range is significantly less. That may not be a problem if you are riding closely together with only two people, since that is all they can be used for.
If you want to find out about all the types of helmet intercoms available, click on this link: Motorcycle Intercoms – How To Choose The Best Motorcycle Intercom For You