The HJC RPHA 31 is a small, open-face motorcycle helmet designed for riders who want dependable protection, reduced wind noise, and a comfortable fit for daily road use and touring. Its Premium Integrated Matrix (PIM) EVO shell combines carbon-aramid hybrid and natural fiber reinforcement materials to help improve shock resistance while maintaining a lightweight feel. The aerodynamic shell shape was refined through wind-tunnel testing to reduce air resistance and improve stability at highway speeds.
This HJC helmet includes a Pinlock® 120XLT® DKS467-ready HJ-39 face shield with anti-scratch treatment and 99% UV protection. An integrated smoke-tinted sun visor features an anti-fog coating and operates through a convenient bottom-positioned mechanism. The visor offers multiple adjustment positions, including up to 10 mm closer to the rider’s face, helping provide personalized shading and improved visibility in changing light conditions. The shield holder is designed to help reduce noise and aerodynamic drag while keeping the visor securely in place.
Ventilation is provided by two intake vents and four exhaust vents for consistent front-to-back airflow. The RPHA Premium Fit interior uses advanced antibacterial fabric with moisture-wicking and quick-drying properties. Removable, washable crown and cheek pads, along with interchangeable cheek pads across helmet sizes, support a customizable fit. Reflective material improves visibility in low-light conditions. The helmet is also compatible with second-generation SMART HJC Bluetooth communication systems, sold separately, allowing convenient rider communication without distracting from the road.
Manufacturer: HJC. Vendor part number: JA19NUS4XMBV. This Small HJC RPHA 31 helmet is intended for motorcycle and powersports riders seeking an open-face design with integrated sun protection, refined aerodynamics, and adaptable comfort features. Verify head measurements and local helmet requirements before purchase to confirm proper fitment and use.
Features:
- Size: Small
- Model: RPHA 31
- Color and finish: Matte Black
- Brand: HJC
- Manufacturer: HJC
- Vendor part number: JA19NUS4XMBV
- Shell construction: Premium Integrated Matrix (PIM) EVO shell with carbon-aramid hybrid and natural fiber reinforcement
- Protection: Multi-density EPS liner helps improve impact absorption
- Aerodynamics: Wind-tunnel-developed shell reduces air resistance and enhances stability at higher speeds
- Ventilation: Two intake vents and four exhaust vents provide front-to-back airflow
- Face shield: Pinlock® 120XLT® DKS467-ready HJ-39 shield with anti-scratch coating and 99% UV protection
- Sun visor: Integrated smoke-tinted, anti-fog sun visor with multi-step positioning
- Interior: Antibacterial, moisture-wicking, quick-drying premium fit fabric
- Comfort: Removable and washable crown and cheek pads with interchangeable cheek pad options
- Visibility: Reflective material supports improved visibility in low-light conditions
- Communication compatibility: Accepts second-generation SMART HJC Bluetooth communication systems, sold separately
- Fitment: Designed for motorcycle and powersports riders requiring a Small open-face helmet with integrated sun protection