HJC · RPHA 1N · Full Face
Its Misano Red Bull MC-21 Multi colorway pairs bold Red Bull branding with Misano-inspired graphics for a standout race-paddock look.
Designed with input from top-level racing, the RPHA 1N focuses on aerodynamic stability at speed, efficient airflow, and a visor system built for fast, tool-less swaps. Comfort and practicality are addressed with SilverCool enhanced moisture-wicking fabric, plus speaker pockets for Bluetooth communication (Bluetooth unit sold separately). See the specifications below for weight and construction details.
Construction
The RPHA 1N uses Premium Integrated Matrix (P.I.M.) construction, built with reinforcement materials listed as carbon and carbon-glass hybrid fabric. For emergency situations, it also includes an Emergency Kit with cheek pads designed for quick and safe rescue. The EPS design is shaped to accommodate eyeglasses and sunglasses.
Ventilation
HJC’s ACS Advanced Channeling Ventilation System uses 5 intakes and 4 exhausts to move air from front to back. This ventilation layout is intended to help flush heat and humidity during aggressive riding, while also working to reduce visor fogging so the rider stays more comfortable through changing conditions.
Shield
The visor system is designed around quick, easy attachment for tool-less shield changes. A 2 Pivot Ratchet system and a double visor locking mechanism help keep the visor secure while still being easy to operate. The helmet is also set up to accept a Pinlock HJ-35 Lens Insert (DKS417).
Aerodynamics
The RPHA 1N is engineered for aerodynamic performance with a sleek shell shape intended to reduce drag and improve stability at high speeds. Its construction incorporates high-performance materials infused with epoxy resin and fiber tissue, materials described as commonly used in aircraft industry and racing environments.
Included
To tailor the helmet for track-focused riding, the RPHA 1N Misano Red Bull includes a breath deflector and a chin curtain to help manage airflow around the face area. For added race-day versatility, it also includes tear-offs and a clear extended aero-spoiler. Included items are listed in the on-page details for quick reference.
| Reinforcement materials | carbon, carbon-glass hybrid fabric |
|---|---|
| Certifications | FIM, ECE, & DOT Approved |
| Weight | 3.33 lbs / 1508 grams (approx, based on size medium) |
| breath deflector |
| chin curtain |
| tear-offs |
| clear extended aero-spoiler |
Included with this helmet as listed by HJC.
RPHA 1N Helmet Manual (PDF) HJC Helmet Size Chart
Provided by HJC. Opens in a new tab.
