HJC · RPHA 12N · Full Face
The HJC RPHA 12N Toothless II is a full-face motorcycle helmet built around an aerodynamic shell shape intended for high-speed stability and performance-focused riding. The Toothless II MC-4SF graphic delivers a stealthy look while keeping the same RPHA 12N technology riders expect for street and track use.
It uses HJC’s HJ-42 curved shield and a two-way pivot ratchet system designed to improve sealing and smooth operation, while also helping reduce air drag and noise. Venting is handled by an advanced airflow layout with four intakes and three exhausts, including an enlarged front intake aimed at maximizing defogging. Inside, the liner is fully removable, and the cheek pads are interchangeable across all sizes to help fine-tune fit.
Construction
RPHA 12N is shaped for aerodynamics with an emphasis on high-speed stability and reduced drag. The shell is constructed with high-performance materials infused with epoxy resin and fiber tissue, with design inspiration drawn from aircraft and racing technology. This approach supports the helmet’s performance-focused intent while maintaining a lightweight, durable build.
Ventilation
An advanced ventilation system channels air through 4 intake ports and 3 exhaust vents to keep airflow moving at speed. The front intake is enlarged to target maximum defogging, helping manage moisture and heat buildup during changing conditions. The vent layout is designed to maintain consistent ventilation when the pace picks up.
Comfort
The Pinlock-ready HJ-42 visor features an anti-scratch coating and 99% UV protection for clear vision on the road. A two-way pivot ratchet system is used for smooth shield movement and improved sealing against the elements. Comfort and fit can be tuned with a fully removable interior and all size interchangeable cheek pads.
Construction
RPHA 12N uses a Premium Integrated Matrix (P.I.M.) shell designed to balance lightweight construction with durability and impact resistance characteristics described by HJC. This helmet is listed as DOT FMVSS No. 218 and ECE 22.06 approved. Weight is noted at 3.315 lbs / 1521 grams (approx, based on size medium); see the specifications below for the full reference details shown on the product page.
| Maximum air intake | 4 intakes and 3 exhausts |
|---|---|
| Certifications | DOT FMVSS No. 218 and ECE 22.06 approved |
| Weight | 3.315 lbs / 1521 grams (approx, based on size medium) |
RPHA 12 Helmet Manual (PDF) HJC Helmet Size Chart
Provided by HJC. Opens in a new tab.
