HJC Smart 21B Communicator YCRF_bicycle_helmets Extended ergonomic stretch insert on

Extended ergonomic stretch insert on palm for flexibility

High grip - More abrasive - recommended for lower areas of bike where pants do not come in contact (frame

May be used with high flow air filters designed for the stock CV carb for better performance

The Coil-On-Plug Kit improves cold and hot starts and provides a snappy throttle response

HydroLeather finishes dry-to-the-touch

HJC Smart 21B Communicator YCRF_bicycle_helmets Extended ergonomic stretch insert onThe 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