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HJC RPHA ST Helmet - Solid
  • HJC RPHA ST Helmet - Solid - Black
  • HJC RPHA ST Helmet - Solid - Matte Black
  • HJC RPHA ST Helmet - Solid - Matte Black
  • HJC RPHA ST Helmet - Solid - Matte Black
  • HJC RPHA ST Helmet - Solid - White
  • HJC RPHA ST Helmet - Solid - Silver

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Video Reviews (2)

HJC RPHA ST Helmet - Solid Videos

Shape: Intermediate Oval

Weight: 3.24 lbs

What's this?


The HJC RPHAST helmet is constructed from Advanced P.I.M. (Premium Integrated Matrix), a composite of carbon fiber, fiberglass, aramid and organic fibers resulting in a remarkably strong and extremely lightweight helmet. An integrated internal sunshield drops down with the flick of a side mounted lever for keeping the rays at bay.


  • Advanced PIM (Premium Integrated Matrix) construction: fiberglass composite shell made from a blend of carbon fiber, fiberglass, aramid and organic non-woven fabric
  • Impact absorbing, multiple density EPS liner
  • Optically-superior anti-scratch Pinlock face shield (HJ-20ST): anti-scratch coating providing 95% UV protection
  • Pinlock insert included for the ultimate anti-fog system
  • Innovative center shield locking mechanism for a balanced, ultra secure seal
  • RapidFire II shield replacement system: quick, tool-less shield removal and installation
  • One-Touch integrated smoke-tinted SunShield (HJ-L1): 2 positions easy to use side lever, even with gloves on
  • Max air-flow top vent: variable air flow is adjusted by glove-friendly intake vent
  • ACS (Advanced Channeling Ventilation System): full front to back airflow flushes heat and humidity up and out
  • SilverCool Plus interior: moisture-wicking and odor-free interior with gingko and advanced silver anti-bacterial fabric
  • Crown and cheek pads are fully removable and washable
  • All sizes of cheek pads are interchangeable in all helmet sizes
  • 5 year limited warranty
  • Meets or exceeds DOT 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 64-65

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
Black / XS 975734 0000228934/0000227811 In Stock: Ships within 24 hours
Black / SM 975735 0000228935/0000227814 In Stock: Ships within 24 hours
Black / MD 975736 0000228936/0000227818 In Stock: Ships within 24 hours
Black / LG 975737 0000228937/0000227821 In Stock: Ships within 24 hours
Black / XL 975738 0000228938/0000227825 In Stock: Ships within 24 hours
Black / 2XL 975739 0000228939 In Stock: Ships within 24 hours
Matte Black / XS 975740 0000228714 In Stock: Ships within 24 hours
Matte Black / SM 975741 0000228715 In Stock: Ships within 24 hours
Matte Black / MD 975742 0000228716 In Stock: Ships within 24 hours
Matte Black / LG 975743 0000228717 In Stock: Ships within 24 hours
Matte Black / XL 975744 0000228718 In Stock: Ships within 24 hours
Matte Black / 2XL 975745 0000228719 In Stock: Ships within 24 hours
White / XS 975722 0000228940 Only 1 Left: Ships within 24 hours
White / SM 975723 0000228941 In Stock: Ships within 24 hours
White / MD 975724 0000228942 In Stock: Ships within 24 hours
White / LG 975725 0000228943 In Stock: Ships within 24 hours
White / XL 975726 0000228944 In Stock: Ships within 24 hours
White / 2XL 975727 0000228945 In Stock: Ships within 24 hours
Silver / XS 975728 0000228696 Out of Stock
Silver / SM 975729 0000228697 In Stock: Ships within 24 hours
Silver / MD 975730 0000228698 In Stock: Ships within 24 hours
Silver / LG 975731 0000228699 In Stock: Ships within 24 hours
Silver / XL 975732 0000228700 In Stock: Ships within 24 hours
Silver / 2XL 975733 0000228701 In Stock: Ships within 24 hours


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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.

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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.

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HJC RPHA ST Helmet - Solid 4.2 5 25 25
Great helmet for the price With this helmet you're getting fantastic value at a much lower price than you'd expect. If Arai or Shoei look out of your budget, HJC's RPHA helmets might be a great option for you. April 19, 2016
Lots of features but not bluetooth communicator friendly. I am pretty happy with this helmet. Looks good and the HJC's have always given me a good fit. Great thing is that you get the pin lock shield included inthe box. Also the integrated sun shield is very helpful . No need to change glasses for sunny days/night riding. My only gripe and it's a decent one is that this is not a good helmet if you plan on setting up a bluetooth comm. system. For a helmet that is advertised as a sport touring helmet you would think they would give you deeper pockets by your ears to fit speakers. I had a pair of U Clear speakers and they did not fit. When I slid the helmet on my ears would bend over from rubbing against the speakers. The Sena speakers seem much thinner so maybe they will work. February 21, 2016
Chin courtain ruins it Overall pretty good helmet, good style, comfortable. Wouldn't buy it again for 2 reasons considering it's high price. -Chin courtain locking is horrible, a little touch on it and it flies off, it's a matter of time before I loose it, very rarely I take helmet off without it flying off, and I have to be carefull when putting it on to not slide my chin on it too much otherwise it comes off too. -When locking Visor it makes loud snap noise that hurts you ears January 16, 2016
Great helmet for the price Moving from HJC's CL-17 as my main helmet - the first thing that struck me is how light this helmet feels. The fit was a bit tight, but this is a medium and I'm right between M and L - so I don't think this helmet is sized small. Also, unlike the CL-17, this model's medium and large size share the same shell - so if break-in isn't enough to loosen it up to a comfortable level, I can always swap out the liner and pads. So I decided to keep it and take to the roads, which I did. The vents are a lot easier to find and manipulate than the small ones on the CL-17. The sun visor is easy to operate with a gloved hand also - though not as easily as the integrated sun-shield in the IS-33 (which uses a spring loaded slider along the crown of the head to deploy and a button to retract). The fact that there is included a pin-lock insert in the box is awesome. Easy to install and it just works. No muss no fuss no fog. While this helmet does seem to block out more engine and road noise than the CL-17 there is a lot more wind noise caused by the top vent. When I reached up to the vent with my hand, the noise stopped- but unfortunately the noise was the same whether the vent was closed or open once I took it away. Leaning forward into more of a 3/4 position did lessen the noise, but that's not going to work for me. One of the main reasons I chose this helmet was it's billing as a touring helmet good for 3/4 to upright riding, so the wind-noise is a disappointment. I'd still recommend it though, in every other way, it fits the bill. September 23, 2015
Not bad The helmet is light weight and looks good. I was hoping ventilation would be a little better. Overall a good helmet though. August 31, 2015
Love it. Joe Rocket Prime, Biltwell Bonanza, a cheap Scorpion can't remember the model. This is a list of my other helmets. While I don't feel totally in love with the graphics of this helmet I am in love with everything else it offers. Very lite, great field of view, hi viz naming a few of the things it does exceptionally well. I wanted the Scorpion t1200 but Ben told pinlock was the way too go for true fog proofing. I'm glad I followed his advice. Helmet feels solid and graphic is done well. I'm not an expert, never had a 300+ helmet but it is totally worth every penny. I've put about 250 miles in it so far. September 1, 2015
Worth it Worth every penny. I have the high viz yellow one and it looks sick, fits my head perfectly, im 6'2" 190# and I wear a 7 1/2 hat, i got the Large in this helmet. Ive never worn a super expensive helmet but this one is the lightest ive ever worn. I ride a Honda Grom so i wanted a helmet that was super bright and visible. This def does the trick. I love the pop down sun visor so i dont have to swap out visors or wear sunglasses. You'll get a ton of compliments with this. August 31, 2015
Nice upgrade from my entry-level helmet I'd purchased an HJC CL-16 about two years prior, and am happy that I've upgraded to this RPHA and retire the CL-16 for passengers. I've been commuting and taking a few 2-3 hour rides on the weekend, and overall have been happy. It beats my previous helmet in every category and I enjoy the center latch for the visor and drop down shades. The fit is more snug than I'm used to, but I believe it'll loosen a little once I break in the cheek pads a little bit. Got the blue reflective shield to complete the look - love it. July 8, 2015
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