Giro has released an all-new DH-rated full-face helmet to replace the long-running Disciple; the Giro Insurgent Spherical, a helmet they claim is 200g lighter than the Disciple and offers 50% better cooling efficiency.
The full-face helmet market is pushing more and more towards lightweight and extremely well-ventilated helmets, fueled by riders’ desire to stay cool while pedaling to the next drop-in. That’s not where the Giro Insurgent is looking to compete, necessarily; our little one weighs 1052g (940g claimed), making the M/L’s claimed 1040g weight rather unlikely. It’s very heavy compared to the likes of the 640g Specialized Gambit, for example, but Giro helmet designers were clear that they wanted a more measured approach to balancing weight, ventilation, comfort and durability. safety, choosing instead to be guided by the needs of the professionals in our sport who put their bodies on the line week after week.
Started by Richie Rude, Bex Baraona and other Yeti Fox members at EWS Tweed Valley, the Giro Insurgent was designed with their feedback, as well as feedback from Reed Boggs and Carson Storch who rode Red Bull Rampage in an earlier version. of the Insurgent. back in October. Here is the end result.
Giro Insurgent Full Face Helmet
- Intent: Enduro and downhill mountain biking
- Certifications: ASTM-1952-DH, CE EN 1078, CPSC, AS/NZS, ASTM-2032-BMX
- Weight (actual): 1052g (XS/S)
- Price: $350 / €389.95 / £349 in the UK
I measure my head circumference at 54cm, so I ordered the XS/S, intended to fit head circumferences between 51cm and 55cm. The Giro Insurgent helmet comes with a set of 25mm thick cheek pads, with a thicker set of 30mm pads in the box for the perfect fit. I would say the fit is snug, but not too tight. Rather a sense of security. I have a round face, so I certainly don’t feel the need to replace the cheek pads with thicker ones, but it is possible to adapt the helmet to a narrower face.
The fit is perfect. The cheek pads comfortably clear my ears and the sound isn’t too dampened. I can hear pretty well what’s going on around me, that’s for sure. I’ve had this headset in my hands for less than 24 hours, so any further reviews will have to wait.
The new Giro Insurgent uses spherical technology, an augmented version of the Giro and Bell exclusive MIPS rotational impact protection system. Both owned by Vista Outdoor, the technology was developed by the company’s Advanced Concepts group, so the brands are able to share the spherical technology across their respective helmet ranges.
It includes two layers helmet, if you will, the interior of which is suspended by MIPS elastomers. This allows the inner layer to move independently, in any direction, relative to the outer layer, with the total amount of movement being limited by these elastomers. On impact, it works much the same as any regular MIPS liner, limiting the amount of rotational force experienced by the head.
The difference here is that the inner layer is much more substantial; on the Giro Insurgent, this inner layer is comprised of a low-density EPP foam that is said to offer more protection than the higher-density EPS foam in low-speed impacts. The regular EPS foam that makes up the outer shell of this helmet handles the greater forces experienced during high-velocity impacts.
This all sounds great for protection, but terrible for ventilation, right? Wrong, says science.
Giro emphasized ventilation and cooling when designing the Insurgent. It has 20 vents, but data collected by Giro’s in-house ‘Therminator’ suggests that it’s not the number of vents that matters for cooling, but rather their size, shape and location. The Therminator is essentially a head and neck model, heated to body temperature, covered in thermocouples. Giro uses it in the wind tunnel to collect data on how different sizes, shapes and locations of ventilation channels affect the temperature recorded at many places on the head.
Based on data collected with the Therminator, Giro can tell us that the new Insurgent offers 50% better cooling efficiency than its own Disciple full-face helmet. The data showed the importance of vents in allowing sufficient airflow through the helmet, hence why you see no less than eight vents in the rear.
Another cool feature of the Giro Insurgent is those patent-pending flex joints you’ll see on either side of the chin bar. Here, the edge of the chin bar is slightly more compliant. Why? Giro believes this could help prevent collarbone injuries that occur in certain types of crashes, where the helmet is forced down onto the rider’s shoulder during an impact.
A final point of discussion would be the Insurgent Peak. The position can be adjusted and locked in place with a plastic bolt. This will keep it from flapping when you go down, which is much more likely to happen if you have an action camera affixed to it.
This is all the information we can give for now. A full and thorough review of the headset is underway.
Price and availability
The Giro Insurgent helmet is available immediately from Giro authorized retailers and on the Giro website for $350 / €389.95 / £349 in the UK. Each helmet comes with a soft drawstring bag (not pictured) and a second set of thicker cheek pads.