Leatt MTB Enduro 4.0 V23 Stealth Bicycle Helmets

A downhill-certified convertible full-face mountain bike helmet with a removable chin bar, designed for enduro riders who need maximum protection on descents and the flexibility of an open-face helmet for climbs.

At a Glance

• Protection: ASTM F1952 downhill-certified with 360° Turbine Technology and dual-density EPS + EPO impact foam
• Helmet Type: Convertible full-face with removable chin bar
• Best For: Enduro, Downhill, Trail Riding, Bike Parks, and E-MTB
• Ventilation: 18 vents designed to provide airflow even at low climbing speeds
• Closure: Fidlock magnetic buckle for quick, secure fastening
• Compatibility: Optimized for Leatt neck braces and features an integrated sunglasses dock

Best For

• Enduro racers who need downhill-certified protection with climbing versatility.
• Mountain bikers riding aggressive technical trails and bike parks.
• E-MTB riders looking for additional certified protection.
• Riders who want one helmet that converts between full-face and open-face configurations.
• Trail riders who prioritize ventilation, comfort, and all-day adaptability.

Before You Buy

• Designed primarily for mountain biking, including enduro, downhill, trail, and e-bike riding.
• The removable chin bar allows quick conversion between full-face and open-face modes.
• Certified to ASTM F1952 for downhill mountain biking and NTA 8776 for e-bike use.
• Includes a Fidlock magnetic buckle for fast one-handed operation.
• Compatible with Leatt neck braces.
• Plastic-free packaging.

What This Product Does

The Leatt Enduro 4.0 is engineered to give riders downhill-level protection while maintaining the versatility required for long enduro rides. Its lightweight polycarbonate shell combines with dual-density EPS and EPO impact foam to help absorb impacts across a wide range of riding conditions.

Leatt's 360° Turbine Technology works alongside the impact foam to help reduce both rotational forces and low-speed impact energy, creating a comprehensive protection system without compromising comfort.

For climbs and less demanding sections of trail, the removable chin bar allows the helmet to quickly convert into an open-face configuration. Eighteen large vents promote airflow even at slower climbing speeds, while the moisture-wicking liner, Fidlock magnetic closure, adjustable breakaway visor, and integrated sunglasses dock enhance comfort and convenience throughout every ride.

Benefits

• Convertible design functions as both a full-face and open-face helmet.
• Downhill-certified protection for aggressive riding and racing.
• NTA 8776 certification makes it suitable for many e-MTB riders.
• 360° Turbine Technology helps reduce rotational and low-speed impact forces.
• Dual-density EPS and EPO foam improve energy absorption during impacts.
• 18 ventilation ports help keep riders cool during climbs and descents.
• Removable chin bar installs and removes quickly without compromising fit.
• Fidlock magnetic buckle allows fast one-handed operation, even while wearing gloves.
• Integrated sunglasses dock securely stores eyewear when not in use.
• Moisture-wicking, washable liner helps keep the helmet fresh on long rides.
• Optimized compatibility with Leatt neck braces for riders seeking additional protection.