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The Leatt MTB Gravity 4.0 Helmet is a full-face downhill (DH) mountain bike helmet designed for aggressive riding such as enduro racing, bike-park laps, downhill runs, and e-MTB riding. It focuses on strong impact protection while maintaining good ventilation and reasonable weight.
Overview
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Type: Full-face MTB / downhill helmet
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Intended use: Downhill, enduro, bike park, aggressive trail riding
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Weight: ~850 g (1.87 lb) starting weight
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Shell: Lightweight polymer shell
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Certification: ASTM DH, EN1078, CPSC, AS/NZS standards for bicycle helmets
The helmet is designed to provide high-level impact protection with good airflow, which is important for gravity riding where speeds and crash forces can be high.
Key Safety Technology
360° Turbine Technology
One of the main features is Leatt’s 360° Turbine Technology, which uses small rotating energy-absorbing discs inside the helmet liner.
Benefits include:
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Helps reduce rotational forces during a crash
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Helps absorb impact energy associated with concussion-level impacts
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Designed to reduce peak brain acceleration and rotational acceleration during impacts
This system functions similarly to other rotational-impact technologies but uses energy-absorbing turbines instead of a sliding liner.
Construction & Comfort
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Dual-density impact foam: In-molded EPS + EPO foam for energy absorption
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Ventilation: 22 vents for airflow during high-effort riding
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Removable mouthpiece cover: Allows riders to increase airflow when climbing or riding in heat
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Dri-Lex liner: Moisture-wicking, breathable, anti-odor, and washable padding
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Fidlock magnetic buckle: Quick magnetic chin strap closure that’s easy to use with gloves
Design Features
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Breakaway visor designed to reduce rotational forces in crashes
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Neck brace compatibility with Leatt and other MTB neck braces
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Crash replacement program (typically 3-year coverage from Leatt)
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Multiple shell sizes and head sizes (S–XL) for better fit
✅ Summary:
The Leatt Gravity 4.0 is a lightweight, DH-certified full-face MTB helmet that combines strong impact protection, advanced rotational-impact technology, and high ventilation. It’s designed for riders who want race-level safety for downhill and enduro riding without the weight and heat of traditional motorcycle-style helmets
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