The Specialized Dissident Carbon Full Face has all the fancy features racer boys demand, without the outrageous racer boy looks. The company claims this helmet is “specifically designed for riders who push the limits of downhill speed and big air” and that it is “the lightest, most-ventilated, and technically advanced full-face carbon fiber mountain bike helmet available”
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So how does it compare?
FIT
The Dissident is available in four different sizes: Small, Medium, Large, and X-Large. While I normally run a small, the company’s online sizing chart suggested a medium, which was spot on.
Fit is subjective, but I found the helmet was very comfortable. It was compatible with a wide variety of goggles, but did not play well with my prescription lenses or sunglasses.
VENTILATION

Specialized raised a lot of hoopla about the Dissident’s impressive “4th Dimension cooling,” but the extra venting didn’t make the helmet feel noticeably cooler than other full face helmets.
SAFETY FEATURES
The Dissident safety features include EMT labeled pull-tabs and Eject System Integration. The pull tabs allow the check-pads to be removed so a medic can safely stabilize the head and neck, in order to reduce the possibility of further injury after a crash. The Eject System consists of a small inflatable bag that is positioned in the top of the helmet. When an EMT attaches a Co2 canister or airbag to the eject system, the bag in the helmet inflates, and pushes the helmet up and off the downed rider. Pioneered in Motocross, and mandatory for all professional licensed AMA Supercross and Outdoor National Motocross events, this is the first (but not the last) mountain bike helmet to incorporate the technology.
While the Dissident comes stock with a trick helmet bag, titanium D-rings, and safety features galore – you will have to pay extra for one of the most important features. The Eject System does not come pre-installed and retails online for $60. Since the helmet already costs $350 MRSP, providing the system pre-installed would have jacked up the price, for something not all riders might see the value in.

CONSTRUCTION
CONCLUSION
- Price
- Fit/Comfort
- Packed with safety features
- Looks awesome
- Cheek pads frequently fall out
- Long hair sometimes become entangled on cheek pad clips
- Glue holding inner plastic to outer carbon shell is failing