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.
Compatible with:
- HJC RPHA 91 helmet
- HJC RPHA 71 helmet
- HJC RPHA 31 helmet
- HJC i71 helmet
- HJC i91 helmet
- HJC F71 helmet
