We Tested It: HJC RPHA 90s Carbon Motorcycle Helmet

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Have you ever tried finding a modular helmet that is lightweight, comfortable, quiet, and safe to use in the ‘visor up’ position?


Well, it’s a nightmare.

And to make things worse, this wasn’t a helmet that was sent to us to review. This is my own helmet bought with my own money and is to be used for my own riding purposes.

So it had to be right.

I looked at many of the popular ‘premium’ lids, including Shoei, AGV, Schuberth, Caberg, and Shark.

So how (and why) did I end up with the HJC RPHA 90s Carbon motorcycle helmet?

Well, ultimately, the HJC RPHA 90s helmet was the lightest and quietest modular helmet on the market.

Additionally, it was cheaper than other premium brands, fitted better, and was the only one that was certified as dual homologated.

HJC RPHA helmet
HJC RPHA 90s Carbon in flipped up position

What Are Dual Homologated Helmets?

In a nutshell, modular (or flip front) helmets come in three classes: P approved, J approved, and P/J approved.

P-certified modular helmets are those tested to withstand impacts with the chin guard down. This is the most common you will find.

J-certified helmets are those tested to withstand impacts with the chin guard in the ‘up’’ position.

Helmets with both certifications are referred to as P/J approved, or dual homologated.

Whilst almost every modular helmet sold in the EU is P-approved, not all of them are approved to be ridden with the chin guard in the ‘up’ position. And this is something you need to dig into when buying a modular helmet.

Most manufacturers don’t make it clear that their helmets are NOT approved to ride in the chin guard ‘up’ position. So you really need to check before you buy.

Chin guard locking mechanism and chin strap

HJC RPHA 90s Carbon Helmet: First Impressions

There were two things I noticed when taking receipt of this helmet.

The first was how light it was.

And the second was just how high the quality was.

The detailing and the little nuances that HJC put on this RPHA premium helmet are a pleasant surprise.

But more about those in a minute.

HJC RPHA helmet
Detailing on the HJC RPHA helmet

Shell, Sizes, & Safety

The first thing I noticed about the shell was the build quality and how great the carbon fibre finish was.

Up close and personal, you can tell this is a premium helmet.

HJC’s PIM+ (Premium Integrated Matrix Plus) technology forms the shell construction. And it comes in three colours (although I could only find it in two colours in the UK.)

In terms of sizes, you have a choice of 6 to fit your requirements:

Size CM
XS 54-55
S 55-56
M 57-58
L 58-59
XL 60-61
XXL 62-63

The HJC RPHA 90s Carbon also meets/exceeds DOT FMVSS218 approval as well as meeting/exceeding ECE 22.05 approval.

modular helmet
HJC RPHA 90s Carbon in flipped down position

HJC RPHA Helmet: Fit & Weight

True to form, I have an awkwardly shaped head because its circumference is 56.5cm.

For most manufacturers, this puts me smack in the middle of a Small and a Medium. Invariably, smalls are too small and mediums are too big.

In the case of this HJC helmet, I opted for a medium and the fit (for me) is perfect for my intermediate/oblong-shaped head.

With regards to weight, my medium weighs in at a very respectable 1550g. This makes it one of the lightest modular helmets on the market – and it’s the first thing you notice when you pick it up.

It’s impressive that HJC have managed to construct a modular helmet that weighs so little.

HJC RPHA helmet
‘R’ detailing on chin guard and throughout the design of the helmet


The fastening on this HJC helmet is a ratchet (seat belt-style) fastening that works exactly as you would expect.

The detailing, however, is fabulous. And the brushed aluminium-style materials add to the premium feel of the helmet.

We love the quality fastening on this helmet

The fastening is easy and intuitive. I can fasten/unfasten the helmet even whilst wearing gloves.

Based on my research, some markets outside of the EU may receive this helmet with a double D strap rather than the micro-ratchet on mine.

HJC RPHA helmet fastening
Quality fastenings on the HJC RPHA helmet

HJC RPHA Helmet: Ventilation

I find the ventilation on this helmet to work efficiently; especially seeing as though I took receipt of this helmet in June when the weather was particularly stuffy.

HJC have utilised their ACS (Advanced Channeling Ventilation System) to keep air flowing through the helmet.

The intake and exhaust ports do a good job of moving air around your head, and the chin vent keeps air moving in front of your mouth and nose.

The top intake port also keeps air moving across the top of your head.

Depending on your preferences, the chin, exhaust, and head ventilation ports can all be opened or closed.

Rear vent is accessible and easy to operate with gloves


I often find that many visors have a certain feeling of ‘flimsiness’ to them. But the HJ-29 visor present on the RPHA Carbon is solid and secure.

There is a centre clip that secures the visor in the bottom position. And the visor stays put when riding at normal speeds.

It has a smooth mechanical feel during operation and secures well in the down position.

HJC RPHA helmet on motorcycle
Chin guard down, visor up

The only issue I have with the visor is that opening the centre clip can be fiddly – especially with gloves on.

It feels natural after a while. But it does feel like HJC could have come up with a better mechanism for the visor lock.

On a positive note, the helmet is Pinlock-ready and comes in the box as part of the package.

visor opening
Visor locking mechanism

Internal (Drop-Down) Sun Visor

This is another important feature for me as I often ride with the visor (or chin guard up) whilst dropping the internal sun visor.

The visor operates with a tactile slider on the side of the helmet that’s in an intuitive position and easy to use.

HJC RPHA helmet visor opening
Drop down visor mechanism on the HJC RPHA helmet

Vision is clear and it drops down far enough to avoid that horrible gap at the bottom of the visor that lets in light.

In fact, vision as a whole (including panoramic vision) is excellent with this helmet.

helmet on motorcycle
Excellent panoramic vision

HJC RPHA Helmet: Chin Guard

The chin guard performs as expected, is perfectly smooth and gives a feeling of quality. Locking in the up or down position is accompanied by a satisfying clunk that lets you know it’s in position.

The big red button under your chin is accessibly placed, and I can lift my chin guard with one hand whilst riding.

The mechanism is predictable, smooth, and has a feel of quality.

HJC RPHA helmet chin guard opening
Chin guard operates with a push of the red button


Based on research by Champion Helmets, the HJC RPHA Carbon is quieter than Schuberth’s C4 Pro, Shoei’s Neotec 2, and AGV’s Sportmodular.

But in the real world? To be honest, it’s the same as every other helmet.

Does it blow my eardrums out every time I ride? No.

But it certainly isn’t quiet enough to ride without earplugs.

Whilst many praise the noise reduction qualities of this helmet, for me it’s neither worse nor better than the ‘average’ helmet.

hjc helmet on grass
Noise management is adequate

HJC RPHA Helmet: Liner

The interior of the RPHA helmet is simple, functional, and comfortable.

It’s nowhere near as plush as the liner of a Schuberth C4. But it uses HJC’s MultiCool Interior with Polygiene, provides antibacterial properties, and enhanced moisture-wicking.

With a nod towards noise reduction, the helmet utilises a 3D engineered, ergonomic interior to reduce noise. But as mentioned above, to my ears at least, the effect is negligible.

Whilst it isn’t as luxurious as the Schuberth C4, the interior of the HJC is more comfortable than most. I have zero complaints.

HJC RPHA helmet interior
Whilst comfortable, the liner isn’t as high-end as some of its competitors

Headset Integration

The HJC RPHA 90s Carbon is Smart HJC ready – although the helmet does not come with a Bluetooth headset as standard.

I have added a cheap intercom system off eBay with no problems. And I also know that the Sena 50S fits without any issues.

smart connection
The HJC RPHA helmet is comms ready

HJC RHPA 90s Carbon Helmet: Conclusion

Have you ever bought something that you were really happy with? Well the HJC RPHA 90s Carbon helmet is one of those purchases for me!

Having never ridden with a HJC helmet before, I was a little unsure as to what to expect.

But in comparison to similar helmets from other premium ranges, it’s cheaper, lighter, quieter, and is the only one that is dual homologated. Plus, it fits me better.

Yes, it’s expensive at around £500. But it’s still over £200 cheaper than the Schuberth C4 Pro (the red one clocks in at over £700.)

Some more colour choices would be nice and it’s lacking a luxury liner that’s present on other ranges.

But overall, HJC have produced a solid helmet that genuinely competes in the premium helmet market.

Well done, HJC. I love it!

Motorcycle Tourer Star Rating: HJC RPHA 90s Carbon Helmet

Rating: 4.5 out of 5.

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