Downhill mountain biking demands helmets that balance protection and comfort at high speeds on rough terrain. The helmets below emphasize strong impact protection, breathable ventilation, and reliable fit systems. They span MIPS-enabled designs to classic full-face builds, offering options for gravity riders, freeriders, and those who prioritize downhill safety. Each model supports aggressive riding with strong chin protection, ample airflow, and adjustable fits to keep you comfortable through long descents.
| Product | Brand | Size Range (cm) | Notable Feature |
|---|---|---|---|
| Grizzly Full Face Helmet – Large | OutdoorMaster | 57-62 | EPP collarbone protection; 27 vents; under 750 g |
| Grizzly Full Face Helmet – Medium | OutdoorMaster | 57-62 | EPP collarbone protection; 27 vents; under 750 g |
| Emerald Green Grizzly – Medium | OutdoorMaster | 57-62 | EPP collarbone protection; 27 vents; under 750 g |
| Full Face Helmet – Large (Mongoose Title) | Mongoose | 59-60 | ABS shell; EPS core; 10 vents; pivoting visor |
| Podium X MIPS Full Face Helmet | DEMON UNITED | 55-58 | MIPS; 20+ vents; 710 g; downhill rated |
Grizzly Full Face Helmet – Large
The OutdoorMaster Grizzly helmet for adults offers a secure fit with a head circumference range of 57-62 cm. It features an EPP collarbone impact system and chinbar shock pads for enhanced protection during aggressive riding. A lightweight and breathable design uses injection-molded high-flow ventilation channels with 27 vents to keep air moving during hot descents. The helmet weighs just under 750 g, balancing protection with manageability for long runs and technical trails.
- Fit System: 57-62 cm head circumference
- Protection: EPP collarbone impact system and chinbar pads
- Ventilation: 27 vents for airflow
- Weight: Just under 750 g
Grizzly Full Face Helmet – Medium
This medium version of the Grizzly helmet maintains the same protective framework with a slightly smaller fit range. It supports downhill and all-mountain riding with the same EPP-based collarbone protection and chinbar pads. The 27-vent design ensures sustained airflow across hot climbs and steep descents, while the under-750 g weight helps minimize neck strain on long sessions. This model is ideal for riders who need a balanced fit on a mid-size head.
- Fit: 57-62 cm (Medium)
- Protection: EPP collarbone system; chinbar pads
- Ventilation: 27 vents
- Weight: Under 750 g
Emerald Green Grizzly – Medium
The Emerald Green Grizzly variant shares the same protective framework and sizing as the other Grizzly models. With a 57-62 cm fit, it provides the EPP collarbone protection and chinbar padding for downhill impact mitigation. The 27-vent channel system ensures airflow across high-output descents and hot days. At approximately 750 g, it remains a lightweight option for riders seeking a balance of safety and comfort on aggressive trails.
- Fit: 57-62 cm
- Protection: EPP collarbone system; chinbar pads
- Ventilation: 27 vents
- Weight: ~750 g
Full Face Helmet – Large (Mongoose Title)
The Mongoose Title Full Face Helmet is designed for downhill and BMX riding, with a durable ABS shell and lightweight EPS foam core for impact resistance. It offers full interior padding that is removable and washable for maintenance and comfort. Ten integrated vents optimize airflow to keep the rider cooler on hot climbs and during long descents. A pivoting visor and a goggle-strap channel help stabilize eyewear during fast, technical sections.
- Fit: 59-60 cm
- Shell/Cushion: ABS shell with EPS core; removable/washable padding
- Ventilation: 10 vents
- Visor/Goggle Compatibility: Pivoting visor; strap channel
Podium X MIPS Full Face Helmet
The Podium X MIPS helmet integrates the MIPS safety system to redirect rotational forces during oblique impacts. It features an aggressive venting layout with 20+ vents to regulate temperature on demanding rides. Weighing about 710 grams, it offers a lightweight build suitable for long downhill sessions and includes multiple safety certifications. The removable liner and durable outer shell align with Demon’s focus on performance-oriented protection for serious riders.
- MIPS technology for rotational impact reduction
- Ventilation: 20+ vents
- Weight: Approximately 710 g
- Downhill rated; multiple certifications
Buying Guide
Key purchase considerations help riders choose the right downhill helmet for their needs. Safety technology, such as MIPS and reinforced EPS or EPP systems, plays a central role in protecting against different impact angles. Fit systems that accommodate a wide range of head sizes (like 57-62 cm) ensure a secure, comfortable ride. Ventilation matters on long descents and hot days; look for models with multiple vents and channels to promote airflow. Weight affects comfort on longer runs, with current downhill-focused helmets typically ranging from 700 g to 750 g.
Additional considerations include chin bar design and whether it is removable, liner material that is washable, and overall durability. Visor design and goggle compatibility are useful for riders who rely on eye protection in bright sun or windy conditions. Certification labels (such as CE, CPSC, and downhill-specific ratings) indicate the helmet meets established safety standards. Finally, consider the helmet’s intended use: aggressive downhill, enduro, or all-m mountain riding, and select a model that aligns with riding style and terrain.
| Product | Vent Count | Approx. Weight | Key Safety Features |
|---|---|---|---|
| OutdoorMaster Grizzly Large | 27 | Under 750 g | EPP collarbone protection; chinbar pads |
| OutdoorMaster Grizzly Medium | 27 | Under 750 g | EPP collarbone protection; chinbar pads |
| Emerald Green Grizzly Medium | 27 | Under 750 g | EPP collarbone protection; chinbar pads |
| Mongoose Title Full Face | 10 | — | ABS shell; EPS core; pivoting visor |
| Podium X MIPS | 20+ | ~710 g | MIPS; downhill rated; multiple certifications |