Description
The SMART HJC 2nd generation premium Bluetooth communication system models implement an all-in-one design, that is fully integrated into the helmet, allowing you to feel the optimal weight balance and aerodynamic performance while riding. Compatibility: HJC RPHA 91 helmet HJC RPHA 71 helmet HJC RPHA 31 helmet HJC i71 helmet...
HJC Smart 21B Communicator - BT021B00MBK0 Item # 928536
Description
The SMART HJC 2nd generation premium Bluetooth communication system models implement an all-in-one design, that is fully integrated into the helmet, allowing you to feel the optimal weight balance and aerodynamic performance while riding.
Compatibility:
- HJC RPHA 91 helmet
- HJC RPHA 71 helmet
- HJC RPHA 31 helmet
- HJC i71 helmet
- HJC i91 helmet
- HJC F71 helmet
Part Numbers for HJC Smart 21B Communicator - BT021B00MBK0
Reviews
Rated 3 out of
5
by
Anonymous from
Great when it works….
My husband and I have been out for random day rides and noticed the connectivity is sporadic….even when I am directly and closely behind. We recently completed a 4 day trip and connectivity was a major issue and twice became a major problem. They were easy to install as they were designed for my helmet but I’m thinking of trying another system. This one just isn’t reliable.
Date published: 2025-08-11
Rated 5 out of
5
by
Bisser Borissov from
Amazing product!
Great product - I have perfect, clear and loud sound.
Date published: 2024-06-17
Questions
Is the HJC Smart 21B compatible with other Sena communicators?
Yes, it is compatible.
Date published: 2023-08-10
Does this have FM radio and how do you access it?
It does not have FM radio. You can view the instructions for the product here: https://oem.sena.com/hjc/documents/UsersGuide_SMART_HJC_21B_1.0.0_en_220628.pdf
Date published: 2024-09-21
Is this only to communicate with other communication system, or can you answer your phone with it?
Yes, the 21B will take phone calls, play Music and also communicate with other Bluetooth comms units.
Date published: 2025-11-14