The Leatt Gravity 4.0 is a full-face mountain bike helmet for downhill, enduro and bike park riding. Its lightweight polymer shell combines dual-density EPS + EPO impact foam with 360° Turbine Technology, while 22 vents and a removable mouthpiece ventilation cover help manage airflow.

Shell and Impact Management

• Lightweight polymer shell.
• Dual-density, in-molded EPS + EPO impact foam.
• 360° Turbine Technology uses energy-absorbing turbine discs designed to allow slight helmet movement on impact, helping reduce peak acceleration and rotational forces.
• Turbine material designed to absorb low-speed impact energy.
• Leatt's 3-in-1 safety system combines the turbines and impact foam to help manage low-speed impacts, high-speed impacts and rotational forces.
• Breakaway visor function designed to help reduce rotational impact forces.

Ventilation and Comfort

• 22 vents, with ventilation designed to remain effective at low riding speeds.
• Removable mouthpiece ventilation cover for adjustable airflow.
• Dri-Lex moisture-wicking, breathable, anti-odor and washable inner liner.
• Fidlock magnetic closure.
• Designed for neck brace compatibility.

Specifications and Additional Features

• Model: Gravity 4.0
• Helmet style: full-face MTB
• Source-listed weight: from 850 g (1.87 lb)
• Source-listed certifications: AS/NZS 2063:2008, ASTM F1952–10, EN1078 and CPSC 1203
• ASTM F1952–10 downhill MTB certification.
• Plastic-free packaging.
• Source-listed 3-year Leatt Helmet Replacement Program; applicable program terms should be confirmed with Leatt.
• Colors: Black/White, Lava Red, Galaxy Blue, Stealth Black/Grey and Desert Brown
• Sizes: S, M, L and XL

Size Guide

The source's small-size lower inch measurement was corrupted; use the listed 55–56 cm range.