RPHA 31 Helmet - Solid
RPHA 31 Helmet - Solid
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- The RPHA 31 open-face model benefits from the Premium Integrated Matrix (PIM) Evo shell and multi-density EPS, excelling in augmenting shock resistance and furnishing optimal protection
- Methodically designed, it orchestrates a serenely quiet and aerodynamically refined ride, an outcome achieved through meticulous wind tunnel trials
- The sun-visor-equipped RPHA 31 effectively diminishes noise levels and mitigates wind turbulence
- Seamlessly aligning with technological progress, the RPHA 31 accommodates the second-generation SMART HJC Bluetooth communication systems allowing an undistracted focus on the road ahead (sold separately)
- Pinlock® 120XLT® DKS467 Ready HJ-39 Shield: Provides 99% UV protection, anti-scratch coated
- PIM EVO Shell
- Premium integrated matrix / P.I.M EVO: Reinforcement materials including Carbon-Aramid Hybrid and Natural Fiber, provide enhanced Shock-Resistant performance, more comfort, and lightness of the helmet
The HJC RPHA 31 Solid Helmet is an off-road and dual-sport full-face built on HJC's premium RPHA platform, designed for riders who demand RPHA-grade protection beyond the pavement. The carbon fiber shell is DOT and ECE 22.06 certified and built with an aerodynamic peak, aggressive ventilation, and a goggle-friendly eye port purpose-designed for off-road use. The RPHA Premium interior is moisture-wicking, antibacterial, and fully removable for washing after dusty or muddy sessions. Pinlock-prepared face shield for clear vision in changing conditions. At The Helmet Shop, the RPHA 31 is the dual-sport full-face for serious riders who want RPHA-level protection on every terrain they explore.
Specifications
| Brand | HJC |
|---|---|
| Model | RPHA 31 |
| Helmet type | Open Face |
| Shell | Premium Integrated Matrix (PIM EVO) |
| Certification | DOT FMVSS 218 |
| Face shield | HJ-39 |
| Pinlock | Pinlock-ready |
| Internal sun shield | Yes — HJ-V12, Dynamic Multi-Step (DMS) |
| Bluetooth / communication | 2nd Gen SMART HJC 21B / 50B compatible |
| Sizes available | XS, S, M, L, XL, 2XL |
| Colors / colorways | Matte Black, N Gray, White |
| Part numbers | 0104-3839 – 0104-3855 |
Frequently Asked Questions
Is the HJC RPHA 31 DOT approved?
Yes. The HJC RPHA 31 carries DOT FMVSS 218.
What face shield fits the HJC RPHA 31?
The RPHA 31 uses the HJC HJ-39 shield. Pinlock status: Pinlock-ready. Replacement clear, smoke, dark smoke and RST mirrored shields are available at The Helmet Shop.
Does the HJC RPHA 31 have a built-in sun visor?
Yes. Internal sun shield: HJ-V12, Dynamic Multi-Step (DMS).
Can I put a Bluetooth headset in the HJC RPHA 31?
Yes — 2nd Gen SMART HJC 21B / 50B compatible. The Helmet Shop can install a Bluetooth headset for you — we install, charge and test every headset in the helmet before it ships, and pair two headsets when you order two helmets together.
What sizes does the RPHA 31 Helmet - Solid come in, and how do I pick one?
This listing is available in XS, S, M, L, XL, 2XL. Measure your head circumference about one inch above the eyebrows and compare it with the HJC size chart. A new helmet should feel snug all around with even pressure and no hot spots; the liner breaks in slightly.
Is the interior removable and washable?
Yes. The comfort liner and cheek pads remove for hand washing; let them air dry before reinstalling.
Why Buy HJC From The Helmet Shop?
- Authorized HJC dealer — genuine HJC product with full manufacturer warranty support.
- Bluetooth headset installs done right: we install, charge and test every headset in the helmet before it ships, and when two helmets are ordered together we pair the two headsets so they work out of the box.
- Fast US shipping from Ormond Beach, Florida, and real helmet experts on the phone.
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