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Discontinued Product!

The HJC RPHA 10 Halcyon Helmet
has been discontinued and will not be returning
Replacement Suggestion:
HJC RPHA-10 Helmets
Out of Stock
HJC RPHA 10 Halcyon Helmet
  • HJC RPHA 10 Halcyon Helmet
  • HJC RPHA 10 Halcyon Helmet
  • HJC RPHA 10 Halcyon Helmet

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Size Chart
$399.99 - $404.99
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Video Reviews (3)

HJC RPHA 10 Halcyon Helmet Videos

Shape: Intermediate Oval

Weight: 3.32 lbs

What's this?

HJC Helmets RPHA 10 Halcyon Helmet

Designed for superior fit and comfort using advanced CAD technology, the new HJC RPHA10 helmet is constructed from Advanced P.I.M. (Premium Integrated Matrix) a composite of Carbon fiber, Fiberglass epoxy, Aramid epoxy, and Organic fibers resulting in a remarkably strong and extremely lightweight helmet. 


  • “ACS” Advanced Channeling Ventilation system: Full front to back airflow flushes heat and humidity up and out
  • Max Air-flow top vent: Variable air flow is adjusted by glove-friendly dials on each intake vent
  • New, easier to operate chin vent
  • RapidFire II HJ-20 shield replacement system: Simple and secure shield ratchet system provides ultra-quick, tool-less removal and installation
  • Optically-superior Pinlock prepared 2D flat-racing shield with included clear Pinlock insert
  • 2-Stage shield closure system with one-touch center locking system makes for an extremely tight and secure seal
  • SilverCoolPlus interior: Removable / Washable interior. Premium soft interior with Ginkgo Extract, moisture-wicking and odor free with advanced silver anti-bacterial fabric
  • 3 shell sizes
  • 5 year limited Warranty
  • Meets or exceeds SNELL & D.O.T. standards

HJC RPHA/FG-Jet/FG-17 Helmet Sizing

Size Head (cm)
XS 54-55
SM 55-56
MD 57-58
LG 58-59
XL 60-61
2XL 62-63
3XL 65-66

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How To Measure

H Head Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.
Product Style RevZilla Item # Manufacturer Product # Availability
White/Black/Red / 2XL 923426 0000209394 Out of Stock
White/Black/Red / SM 923368 0000209390 Out of Stock
White/Black/Red / MD 923369 0000209391 Out of Stock
White/Black/Red / LG 923370 0000209392 Out of Stock
White/Black/Red / XL 923371 0000209393 Out of Stock


Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Write a Product Review for a chance to win our monthly $100 giveaways.
HJC RPHA 10 Halcyon Helmet 4.8 5 249 249
Great Helmet I had used this helmet a few times, as a loaner before I finally purchased one. To be honest, this is my first helmet, so I don't have anything to compare to. The fit of this helmet is great, its snug but not tight. The field of vision is great, I can see as much as my eyes can see without turning my head. Airflow is good as well. I usually ride between 1.5 - 3 hours at a time and I have yet to get over heated or sweat dripping in my eyes, even at 95 degrees. Noise is nothing to be concerned about here. At 95 mph this helmet is still quiet enough I can hear my own thoughts. I have yet to hit triple digits. There is little to no buffeting and no lift at 95 mph. I can't rate protection because I haven't needed it, but it is Snell rated, so I would have to guess it will more than suffice if needed. Please take this review with a grain of salt as I am still new to the sport. August 9, 2016
RPHA 10 Great helmet ,vision is excellent it is light and Quiet but still feels protective good one revzilla July 5, 2016
Great value at a great price. After weeks of searching, once I saw this helmet, I knew this was the one for me. Great features, gorgeous decal and top marks in safety. Even better, it was on sale for about 40% less than MSRP. I highly recommend this helmet. July 5, 2016
Bird collision tested at 90mph! This is my 7th RPHA 10 (3 Pros and 4 Regular). I rotate my helmets and color combinations from week to week to keep cops from 'zero-ing' in on me. These helmets are spot on and great bangs for the buck. In a full tuck at 150mph, the helmet doesn't budge. I've turned my head to look behind me at over 120mph and the wind just glides right off. Was riding this past weekend doing about 90mph and a bird swooped in and smashed me right in my face visor--it died instantly and fell on my triple tree and instrument cluster. The helmet didn't budge on impact--I pulled over; wiped off the blood, guts, and feathers and continued the onslaught. SPORTBIKE > MUSCLE CAR August 1, 2016
An excellent helmet Upgraded from a HJC CL-16. This helmet is a half pound lighter, quieter, better looking, and better fitting. I got the same size (large) and it fits a bit tighter on my face, but it is not uncomfortable. The breath box, chin liner, and the visor lock system are great features. Revzilla had this helmet on close out at a great price. When I saw they only had one left in stock in the silver color and sprung on it... and I'm glad I did. July 24, 2016
Best value full face helmet! Did a lot of research on this one. As far as I could tell, this is the best bang for your buck helmet on the market. HJC's RPHA line up apparently gives you high end protection technology for mid level prices. Gotta love that! Only negative?... Ventilation is NOT good. I'm a first time rider, and admittedly this is my first ever helmet. So maybe I just don't have anything to compare it to. That, and I have some hot a&& breath! July 19, 2016
great product. Would totally buy again. Great fit, great air flow, great Bluetooth ready. I love it. July 10, 2016
Excellent Product I had tried an RF-1200 from a local shop and did not like the feel. Decided to try the RPHA-Pro Cypher and fell in love. Such an exceptionally comfortable helmet, amazing airflow. Also comes with a pinlock insert, reasonably priced optional visors as well. July 9, 2016
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