#10 on this list
Proframe RS
Fox Racing
The Fox Racing Proframe RS builds upon the legacy of the original lightweight full-face helmet, introducing advanced fit adjustment and enhanced protection for aggressive enduro riding. At 29.5 ounces (836 grams), it hits the sweet spot between full downhill certification and all-day pedaling comfort. The most significant upgrade in the RS edition is the integration of the Mips Integra Split protection system. This design utilizes two independent layers of foam connected via elastomeric dampers, allowing the inner and outer layers to move independently during an angled crash to redirect rotational forces. Furthermore, Fox integrated a BOA fit dial into the rear cradle, solving the sizing compromises that often plague pad-only full-face helmets. Airflow is among the best in the full-face category, thanks to massive front intake vents that keep air moving freely over the face during prolonged efforts. The trade-offs center around its $400 price tag, placing it at the upper echelon of enduro gear. Additionally, while lighter than a pure downhill rig, it remains warmer and heavier than any half-shell helmet, making it best suited for rowdy descents and enduro racing. **Highlights** - Mips Integra Split dual-density foam design absorbs rotational and linear forces. - BOA retention dial allows micro-adjustable circumference tuning. - Fully certified for downhill competition (ASTM F1952). - Massive venting layout optimizes airflow on long pedal transfers. - Three-position adjustable visor accommodates full-sized riding goggles. **Watch-outs** - Premium $400 price point is a heavy investment. - Slightly heavier than minimalist enduro lids like the Specialized Gambit. - Shell architecture can feel bulky during casual, non-technical trail rides.
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#1 on this list
Gambit
Specialized
The Specialized Gambit represents a modern shift in full-face helmet design, built specifically for enduro racers and aggressive trail riders who demand downhill-certified safety without the crushing heat of a traditional downhill lid. Tipping the scales at a remarkably light 26.1 ounces, it relies on a proprietary carbon and polycarbonate skeleton to drop weight while maintaining structural rigidity across the chin bar and crown. Reviewers consistently highlight its airflow as a standout feature. Rather than relying on simple cutouts, the Gambit uses large, intake-channeling vents that pull air through the face opening and expel it out the rear, making sustained pedaling on hot transfer stages tolerable. The integrated retention system uses a micro-adjust dial combined with adjustable cheek pads, allowing riders to dial in a stable fit that prevents unwanted bobbing over high-speed brake bumps. The compromises stem from its hyper-focused lightweight design. Because it strips out excess bulk, the Gambit lacks the plush, sound-dampening interior padding found on burly resort downhill helmets. The visor is fixed in place, which helps maintain aerodynamic and structural integrity but limits where you can stow your goggles when climbing. At an approximate $300 price point, it is an investment piece tailored strictly for riders who pedal hard on technical terrain. **Highlights** - Exceptionally low weight of 26.1 ounces for a DH-certified full-face. - Massive airflow channels designed for active climbing and pedaling. - Integrated Mips SL system reduces rotational forces without impeding venting. - Multi-material shell combines carbon fiber, polycarbonate, and targeted EPS. - Fine-tune dial fit cradle provides a secure, wobble-free hold. **Watch-outs** - Fixed visor prevents on-helmet goggle storage. - Interior padding is thinner and less plush than traditional gravity lids. - Premium $300 price tag reflects specialized race engineering.
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Specs side by side
| Spec | Proframe RS | Gambit |
|---|---|---|
| Weight | 29.5 oz / 836 g | 26.1 oz (approx. 740 g) |
| Safety Standard | ASTM F1952 Downhill Certified | ASTM F1952 Downhill Certified |
| Rotational Protection | Mips Integra Split dual-layer system | — |
| Fit System | BOA micro-adjust dial with cradle | — |
| Buckle Type | Fidlock magnetic closure | — |
| Intended Discipline | Enduro, bike park, and aggressive trail | — |
| Impact Tech | — | Integrated Mips SL |
| Shell Build | — | Carbon fiber and polycarbonate composite |
| Retention System | — | Integrated micro-adjust rear dial |
| Approximate Price | — | $300 |
What our reviewers liked and didn't
Proframe RS
- ASTM F1952 downhill certification provides downhill-rated impact protection
- BOA retention dial allows micro-adjustable fit rarely found in full-face lids
- Dual-density Mips Integra Split system manages multi-directional forces
- Generous ventilation through chin bar keeps breathing clear on climbs
- Steep $400 price tag represents a major investment for an enduro helmet
- Heavier than ultra-minimalist rivals like the Specialized Gambit
- Significantly warmer and bulkier than standard half-shell trail helmets
Gambit
- Ultralight 26.1-ounce build reduces neck strain on long descents.
- Class-leading airflow allows active pedaling on steep transfer climbs.
- Integrated dial retention system delivers a secure, slip-free fit.
- Downhill certified to ASTM standards despite open ventilation.
- Fixed visor prevents on-helmet goggle storage when climbing.
- Sparse interior padding provides less plush comfort than downhill lids.
- High $300 price point represents a significant investment.
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