Nolan · N40-5 · Nolan N40-5
Nolan N40-5 Grey
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 oval head shapes; may feel tight on diamond heads due to extended cheek coverage.
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 balance of urban agility and premium protection with the Nolan N40-5 in sleek Grey. This open-face masterpiece features an aerodynamic profile designed to slice through the wind, ensuring a comfortable ride even at highway speeds. The integrated Micro-Ventilation System keeps you cool by directing airflow precisely where it's needed most, while the acoustic lining dampens road noise for crystal-clear communication. With its lightweight construction and superior fitment, the N40-5 offers an uncompromising blend of style and safety, making it the ideal choice for city commuters and weekend explorers alike.
Rider Profile & Intended Use
Where to buy
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Amazon (US)
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Price History & Trends
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Product Concept & Specifications
Nolan (Italy)Engineering & Technical Analysis
The N40-5 utilizes Nolan's patented Micro-Ventilation System to channel airflow directly over the ears and through the visor, significantly reducing wind noise and cooling the rider. Its open-face architecture is reinforced with a single-piece polycarbonate shell that maintains structural rigidity while minimizing weight distribution for enhanced head stability.
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 oval head shapes; may feel tight on diamond heads due to extended cheek coverage.
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.