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HJC RPHA 12N Keres Carbon Helmet
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  • HJC RPHA 12N Keres Carbon Helmet
  • HJC RPHA 12N Keres Carbon Helmet
  • HJC RPHA 12N Keres Carbon Helmet
  • HJC RPHA 12N Keres Carbon Helmet
HJC RPHA 12N Keres Carbon Helmet
$669.99 USD
Size
Color

The HJC RPHA 12N Keres Carbon Helmet combines lightweight carbon construction with aerodynamic performance for street and track riding. Its Premium Integrated Matrix EVO (PIM EVO) shell is engineered for a lightweight, strong construction, while the aerodynamic shell shape and optimized rear spoiler help improve stability at speed. The HJ-42 curved face shield, advanced ventilation system, fully removable interior, and emergency pull tabs provide practical performance features for demanding riders.

  • Premium Integrated Matrix EVO (PIM EVO) carbon construction
  • Lightweight carbon shell construction
  • Aerodynamic-focused shell shape helps reduce lift and drag
  • Optimized rear spoiler improves aerodynamic stability
  • HJ-42 curved face shield and ratchet system helps reduce air drag and noise
  • Includes clear and dark smoke face shields
  • 2-way pivot ratchet system improves face shield sealing
  • Four intake vents and three exhaust vents promote airflow
  • Enlarged front intake helps maximize defogging and airflow
  • Fully removable interior
  • Interchangeable cheek pads across all helmet sizes
  • Emergency pull tabs allow easier helmet removal
  • DOT FMVSS No. 218 certified
  • ECE 22.06 certified
  • Approximate weight: 3.315 lb. / 1521 g based on a Medium solid-color helmet

HJC RPHA 12N Keres Carbon Helmet Size Chart

Size Head Circumference Hat Size
XS 21 1/4-21 5/8 in. 6 3/4-6 7/8
S 21 5/8-22 in. 6 7/8-7
M 22 1/4-22 7/8 in. 7 1/8-7 1/4
L 22 7/8-23 5/8 in. 7 1/4-7 3/8
XL 23 5/8-24 in. 7 1/2-7 5/8
2XL 24 3/8-24 3/4 in. 7 3/4-7 7/8

How to Measure: Measure around the fullest part of your head, approximately 1 inch above the eyebrows and ears. Keep the measuring tape level and comfortably snug without compressing the head. Compare the measurement with the size chart to determine the appropriate helmet size.
Return policy

Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
Shipping

We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Manufacturing

Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.

Helmet Size Convention Chart

The size chart is for reference. Always try the helmet on and follow the instructions for a proper fit.

Size CM Hat Size Inches
3XS50–516 1/4 – 6 3/819 3/4 – 20 1/8
2XS52–536 1/2 – 6 5/820 1/2 – 20 7/8
XS54–556 3/4 – 6 7/821 1/4 – 21 5/8
S55–566 7/8 – 721 5/8 – 22
M57–587 1/8 – 7 1/422 1/4 – 22 7/8
L58–597 1/4 – 7 3/823 1/4 – 23 5/8
XL60–617 1/2 – 7 5/823 5/8 – 24
2XL62–637 3/4 – 7 7/824 3/8 – 24 3/4
3XL64–658 – 8 1/825 1/8 – 25 1/2
4XL66–678 1/4 – 8 3/826 – 26 3/8
5XL68–698 1/2 – 8 5/826 3/4 – 27 1/8

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Frequently asked questions
Are HJC helmets DOT and ECE certified?

Yes. Most HJC helmets are DOT-approved, and many premium models (like the RPHA series) also carry ECE 22.06 certification, ensuring high safety standards for street and track use.
How should I choose the correct HJC helmet size?

Measure your head circumference with a soft tape measure above your eyebrows. Compare the measurement to the HJC size chart for the specific model you're buying, as fit may vary between product lines.
Can I replace the visor or shield on my HJC helmet?

Absolutely. HJC offers multiple replacement visors, including clear, smoke, mirrored, and pinlock-ready options. Most helmets feature a tool-less quick-release system for easy swaps.
How do I clean my HJC helmet properly?

Use a mild soap and warm water for the shell. Interiors on most HJC models are removable and washable, but avoid harsh chemicals and do not use heat to dry the liners.
Are HJC helmets compatible with Bluetooth communication systems?

Yes. Many modern HJC helmets, especially the RPHA and i-series, are Bluetooth-ready and compatible with systems like Sena, Cardo, or HJC’s own SMART Bluetooth units.