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HJC RPHA 10 Speed Machine Lorenzo Helmet
  • HJC RPHA 10 Speed Machine Lorenzo Helmet - Black/Silver
  • HJC RPHA 10 Speed Machine Lorenzo Helmet - Black/Silver
  • HJC RPHA 10 Speed Machine Lorenzo Helmet - Black/Silver

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Video Reviews (3)

HJC RPHA 10 Speed Machine Lorenzo Helmet Videos

HJC RPHA 10 Speed Machine Jorge Lorenzo Helmet

Designed for superior fit and comfort using advanced CAD technology, the 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
  • Optically-superior Anti-scratch Pinlock face shield (HJ-20): Anti-Scratch coating providing 95% U.V. protection. Innovative center shield locking mechanism for a balanced, ultra secure seal
  • RapidFire II 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 Helmet Sizing:

Wrap a cloth measuring tape around your head just above your eyebrows. Pull the tape comfortably snug, and read the length.

Size Hat Size Measurement (in)
2XS 6 3/8 - 6 1/2 20 - 20 1/2
XS 6 5/8 - 6 3/4 20 7/8 - 21 1/4
SM 6 7/8 - 7 21 5/8 - 22
MD 7 1/8 - 7 1/4 22 1/2 - 22 7/8
LG 7 3/8 - 7 1/2 23 1/4 - 23 5/8
XL 7 5/8 - 7 3/4 24 - 24 3/8
2XL 7 7/8 - 8 24 3/4 - 25 1/4
3XL 8 1/8 - 8 1/4 25 5/8 - 26
4XL 8 3/8 - 8 1/2 26 3/8 - 26 3/4
5XL 8 3/4 27 1/4 - 27 5/8

RPHA Series, FG-Jet, and FG-17 Helmet Sizing ONLY:

Size Hat Size Measurement (in)
XS 6 3/4 - 6 7/8 21 1/4 - 21 5/8
SM 6 7/8 - 7 21 5/8 - 22
MD 7 1/8 - 7 1/4 22 1/2 - 22 7/8
LG 7 1/4 - 7 3/8 22 7/8 - 23 1/4
XL 7 1/2 - 7 5/8 23 5/8 - 24
2XL 7 3/4 - 7 7/8 24 3/8 - 24 3/4
3XL 8 - 8 1/8 25 1/4 - 25 5/8

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

Click here to see the full HJC Helmets Size Chart
Product Style RevZilla Item # Manufacturer Product # Availability
Black/Silver / XS 975710 1596-951/ In Stock: Ships within 24 hours
Black/Silver / SM 975711 1596-952/ In Stock: Ships within 24 hours
Black/Silver / MD 975712 1596-953/ In Stock: Ships within 24 hours
Black/Silver / LG 975713 1596-954/ In Stock: Usually ships in 1-2 business days
Black/Silver / XL 975714 1596-955/ In Stock: Ships within 24 hours
Black/Silver / 2XL 975715 1596-956/ In Stock: Usually ships in 1-2 business days


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.

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HJC RPHA 10 Speed Machine Lorenzo Helmet 4.8 5 218 218
This is a very good helmet at a very good price. I have used this helmet the HJC RPHA 10 Evoke for about three months. the helmet has very good air flow for the hot summer months, and for the cooler months like now with the vents closed the helmet is air tight and very warm. the helmet is light and does not move around in the wind even when you are behind a truck on the highway, and that makes it a whole lot easier on the neck on a long ride. All in all the HJC RPHA 10 is a high quality helmet and I would highly recommend this helmet to anyone needing a new one!! November 17, 2015
Comfortable Safety...wish it had better "racing" visibility I've gone thru 2 of these helmets. This one and the Graffitti. The comfort outways the faults. First the bad, when I'm gridding up and the 3 sign is out, I really like to put the visor up. However, the 2 board always seems early and the 1 is also rushed and I need to get the visor down and snapped quick. This visor is a little hard to snap shut with my race gloves. An average problem, basically I like to stick my neck way out lining up a turn. The top of the helmet is a little lower than I wish it was. Basically Looking left and right is useless during a race. You're not worried about traffic you always look forward or "up". Up being that you're hanging off the side of the bike and craning your neck "up" to look forward. The top of the visor opening could be a little more to make that easier. It's hard on my neck. The good, comfort, comfort, comfort. This helmet rocks. The great, I've gone thru two of these because me head has hit the pavement twice. The first time was upwards of 140mph and I barely felt it. My arm felt like the hand of God reached down and slapped me into the track but my head barely registered the fall. The second time I didn't feel a thing. Thru the few faults this helmet rocks simply for comfort and protecting my dome. Love it. A similar fall in my "helmet not to be mentioned" and I saw stars. September 14, 2015
A Great Helmet for a Great Price This is a great quality helmet that is DOT and SNELL certified for a great price. It flows air well through the mouth and top vents. The liner in super comfortable and easily removable for washing which is a plus. The shield has a great seal which keeps out water when getting caught in the rain. One issue the helmet has is fogging, but that is only if you do not install the pinlock insert. The helmet feels secure at high speeds and there is minimal buffeting. The best part is that the black/orange buzzsaw graphic matches my KTM perfectly! October 28, 2015
Lightweight with good protection This helmet is comfortable, lightweight and runs a tiny bit small for a large. It took a little break in time before it fit my large head well. It comes with a pinlock shield and an insert, and once that was installed, there was no issue with fogging. I gave mine the roughest test, which was a 130 mph crash. I went down hard but the helmet did it's job and I did not have a concussion. I've just purchased another one to replace the rashed helmet. I've never liked a helmet enough to do that in my 30 years of riding. October 26, 2015
Great Lid Fit for me --- right on. Style --- right on. Value compared to the high enders --- way up there. I've only had two issues, one the shield mechanism failed and could not be repaired in the field so I had to use duct tape to keep it on until I could get to a shop. Even there, they had to pull a part from an existing helmet to fix this one. When I got home ZLA sold me a repair kit for the future. The other issue...noise. If the top vents are open, this helmet roars. If they are closed, it roars less but then it gets hot. Be careful about pressure on the adjustable wheels for the vent, they are not strong and fail easily with even slight pressure. BTW, the metallic silver shield, the expensive one, lasts about one hour before the coating fails. October 26, 2015
Great Product First helmet, did run a bit smaller compared other helmets I have tried on. I would think normally i would be a large but medium fit a bit more snug. i went with a medium and glad i did. As it started breaking in it feels really comfortable. The helmet is also very light, i almost forgot i have it on. Definitely worth the money. October 19, 2015
Amazing value! Sure Arai and Shoei make great helmets but who wants to pay for a label? Super god looking, good air flow, stable at speed and a price other companies can't touch save maybe Scorpion. The pinloc insert makes the shield essentially fog proof. I personally love the graphics and I can wear it all day long since it's so light. Save you money and get an RPHA10! You won't regret it. Thanks Revzilla for the price and fast delivery. October 12, 2015
A good helmet that many will be happy with This helmet is great, it looks good, fits well, and has a few nice features. Pros: + Two open/close vents on top of head to allow air to flow, they allow for partial open to allow "some" air to get through. + Comes with pins on the shield for insertable anti fog plates - my purchase came with an anti-fog insert, I put it in approx 3 weeks after getting the helmet, and wow, I wish I put it in right away. It doesn't fog even if I intentionally blow on the inside of the shield. + Padded, high quality straps + Removable padding to facilitate washing pads + Fairly good price Note that I have no idea how well this helmet does what it is designed for: Protecting your head in a collision/crash. I hope that it stays that way, but so far, I believe I can trust this helmet would keep me safe if so needed. October 12, 2015
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HJC RPHA 10 Speed Machine Lorenzo Helmet
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