HJC RPHA 31 Dereen
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Why riders pick it
- P.I.M. (Premium Integrated Matrix Plus) EVO shell
- Aerodynamic design generates down force for high stability and less drag
- Ventilation system offers bypass air channel and maximum air intake
- Distortion-free HJ-39 shield provides clear and wide view
- Shield deflector lowers noise level and blocks incoming wind
- Shield holder secures the shield and reduces noise and air drag
- HJ-V12 3-step integrated sunshield is adjustable for optimized position
- Interchangeable cheek pads feature grooves to accommodate eyeglasses
Specs
In the box
- Pinlock 120 insert (DKS467)
Details
The HJC RPHA 31 Dereen, finished in the Dereen graphic, is built for riders who want premium open-face comfort with refined aerodynamic performance. Its PIM Evo shell construction combines advanced materials with multi-density EPS to create a lightweight helmet focused on impact management and long-distance comfort. Developed through extensive wind tunnel testing, the RPHA 31 is engineered to reduce wind turbulence and maintain a smoother, quieter ride at speed. The advanced ventilation system channels airflow efficiently through the helmet to help manage heat and humidity, while the distortion-free HJ-39 shield delivers a wide, clear field of view. An adjustable 3-step integrated sun shield helps adapt to changing light conditions, and the improved 2-way pivot ratchet system enhances shield sealing and movement. Designed for modern riders, the RPHA 31 also features eyeglass-friendly cheek pads and compatibility with second-generation Smart HJC Bluetooth systems for seamless communication on the road.
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