Nexx · X.404 · Nexx X.404
Nexx X.404 Black
Quick Facts at a Glance
Verified Safety Snapshot
How this helmet’s verified certifications map to recognized safety homologations and crash testing.
Safety standards compliance is based on official manufacturer documentation and public safety laboratory test results. Always verify regional compliance labels on the physical helmet prior to use.
Verified Fit & Sizing Guide
Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.
Designed for open-face fit; compatible with modular chin bars (sold separately); best suited for riders preferring a lighter profile.
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Design Concept & Background
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Experience the perfect blend of urban style and safety with the Nexx X.404 in sleek Black. This open-face helmet is crafted for riders who demand a commanding presence without compromising on protection. The matte finish exudes sophistication, while the integrated chin curtain and visor system minimize wind buffeting, ensuring clear communication and reduced fatigue during long commutes. Designed with an intermediate oval fit, it cradles the head securely, offering superior stability at speed. Whether navigating city traffic or cruising open roads, the X.404 delivers exceptional ventilation through its strategic intake vents, keeping you cool in summer heat. Upgrade your riding experience with a helmet that balances modern aesthetics with proven safety standards.
Rider Profile & Intended Use
Where to buy
Price History & Trends
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Product Concept & Specifications
Nexx (Portugal)Engineering & Technical Analysis
The Nexx X.404 utilizes a multi-density EPS liner engineered to absorb high-impact energy while maintaining a lightweight profile essential for open-face dynamics. Its aerodynamic shell features integrated wind deflectors that channel airflow over the rider's face, significantly reducing turbulence and noise compared to standard open-face designs.
Fit & Shell Structure
Intermediate Oval Shape
Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.
Safety & Certifications
Acoustics & Aerodynamics
Technology & Convenience
Interactive Size & Fit Finder
Designed for open-face fit; compatible with modular chin bars (sold separately); best suited for riders preferring a lighter profile.
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Available Colors & Graphics
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Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.