We test the new Specialized Ambush 3: more ventilation, a better fit and an adjustable peak once again

Specialized has renewed this year the Ambush, its trail helmet reaches the third generation with an AirCage internal structure, 4D Cooling ventilation system, and Mips Air Node Pro, as well as a BOA FS1 adjustment, a Fidlock magnetic buckle, and the return of the adjustable visor. We have tested it in size M and we can tell you that comfort is one of its strong points, but not the only one.

What’s new in the Specialized Ambush 3 and what changes from the Ambush 2

The Ambush 2 had a very particular design, with rounded shapes and an integrated visor in the shell that could not be moved. For this new version, Specialized brings back the possibility of adjusting it, which already existed in the first Ambush, and accompanies that change with more compact lines. The proprietary adjustment dial from Specialized is replaced by a BOA FS1 and the classic buckle by a Fidlock magnetic closure.

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Inside, the Ambush 3 incorporates Mips Air Node Pro, integrated into the pads, and the AirCage, an internal structure made of composite material. According to Specialized, this reinforcement allows for helmet support and opens large ventilation entries. The integration of the Mips system and air circulation thus play an important role in the design.

It is an open helmet for trail and enduro, compliant with EN 1078:2012 + A1:2012. It has also obtained five stars in Virginia Tech tests, the highest category on their scale. It is offered in three sizes, S, M, and L, with a weight of 380 grams.

AirCage and 4D Cooling

The underlying idea of the Ambush 3 is that a helmet with more holes is not necessarily a cooler helmet. The size of the openings and the airflow inside are part of the same approach. The AirCage provides the structure that, according to Specialized, makes the large ventilation openings of the helmet possible.

On that basis, the 4D Cooling works. According to Specialized, air enters through the Mouthport, the front entry of the helmet, travels through the deep longitudinal internal channels, and exits through the rear openings.

The Mips Air Node Pro fits into that approach. The low-friction layer is integrated into the pads, instead of being an independent sheet that runs inside the helmet. According to Mips, the system is designed to help reduce the rotational movement of the head in certain oblique impacts, with very little added weight and volume.

Mips also describes moisture management with Coolmax fabric, channels that direct sweat, and drip zones to keep it away from the face. The pads can be removed, rinsed, and reattached once dry.

BOA FS1, Fidlock closure, and four-position visor

The adjustment is handled by a BOA FS1 with 360-degree micro-adjustment. The regulation acts on the perimeter of the head and allows for fine-tuning the fit with the dial.

The straps use Specialized's Tri-Fix system and close with a Fidlock magnetic buckle. This is one of the changes from the previous generation, along with the new adjustment and visor regulation.

The visor can be placed in four positions and is designed to detach in case of impact. Specialized also offers the VisorLock lock as an option. The helmet includes a compartment to store glasses.

Riding with the Specialized Ambush 3

We tested the Ambush 3 in size M (55–59 cm) and black color. The first thing that stands out while riding is the fit. The new BOA is very easy to manipulate even with gloves, and its adjustment is precise, as expected.

And after the adjustment, you quickly realize that it is a very comfortable helmet, both on short rides and on routes of up to three hours. On long rides, the Ambush 3 offers that pleasant feeling of forgetting that you are wearing the helmet.

Regarding ventilation, we find it to be very well resolved considering the level of protection it offers and how compact it sits on the head. It is likely that we are facing one of the best helmet models for trail with great protection but well-ventilated.

The adjustable visor is another of the most useful changes and is missed when it is not available. Raising it allows us to gain light on descents and keeps the front entry clearer to enhance ventilation. 

Conclusions

The Specialized Ambush 3 seems to us to be a very complete helmet and a good option if you only want to have one helmet for trail, enduro, or downcountry. The new BOA adjusts very well, the helmet becomes forgettable, and the ventilation has left us with a good impression. The return to an adjustable visor is a resounding success.

For 199 euros, it fits well for the trail cyclist looking for protection without giving up a compact, ventilated, and comfortable helmet. The fit on each head will be decisive for those qualities to translate into a good experience. If you have the chance to try it on before buying, do it.

Technical specifications of the Specialized Ambush 3

• Type: open MTB helmet for trail and enduro.
• Structure: internal reinforcement of composite material AirCage.
• Mips System: Air Node Pro integrated into the pads, with Coolmax fabric and moisture management channels, according to Mips.
• Ventilation: 4D Cooling system with front Mouthport entry, internal channels, and rear exits.
• Adjustment: BOA FS1 with 360-degree micro-adjustment.
• Straps and closure: Tri-Fix system and Fidlock magnetic buckle.
• Pads: removable and washable.
• Visor: adjustable in four positions and designed to detach in case of impact. Optional VisorLock.
• Extras: integrated compartment for storing glasses.
• Compliance: EN 1078:2012 + A1:2012.
• Independent evaluation: five stars Virginia Tech.
• Sizes: S (51–56 cm), M (55–59 cm), and L (58–62 cm). Classic fit.
• Tested unit: size M, black color.
• Declared weight: 380 g.
• Price: 199 €
• Here you can see the rest of the Specialized range