The SMK Allterra X Power GL 557 is engineered for adventure and off-road riders who demand a helmet that provides strong protection, excellent ventilation and bold graphic styling. Built from an advanced energy-absorbing thermoplastic shell, it offers dependable impact resistance while keeping weight low enough for long trail rides and rugged off-road exploration. Its extended peak helps shield against sunlight, dust and flying debris, making it ideal for enduro, trail and adventure environments. The wide eye-port accommodates most off-road goggles, ensuring a clear and expansive field of view. A multi-ventilation system channels fresh air efficiently through the helmet, keeping riders cool during intense and demanding conditions. Inside, the removable and washable hypoallergenic liner ensures breathable comfort and lasting hygiene. The quick-release chinstrap provides secure fastening with easy operation. Fully ECE certified, the SMK Allterra X Power GL 557 merges durability, comfort and powerful X Power graphics for riders who want reliable performance with standout style.
Key Features
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ECE certified
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Lightweight energy-absorbing thermoplastic outer shell
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Extended peak for sun and debris protection
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Wide eye-port compatible with most off-road goggles
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Multi-ventilation system for superior airflow
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Removable and washable hypoallergenic comfort liner
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Moisture-wicking, breathable interior
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Quick-release chinstrap
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X Power GL 557 bold off-road graphic design
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