Global Helmet Intelligence Platform

Leatt · Velocity 4.0

Leatt Velocity 4.0

VERIFIED TECHNICAL SPEC Open Face DOT, ECE 22.05 Polycarbonate 520g

Quick Facts at a Glance

Category Open Face
Certifications DOT, ECE 22.05
Measured Weight 520 g
Shell Material Polycarbonate
Head Shape Fit Intermediate Oval
Retention System Not verified
SAFETY & CERTIFICATIONS

Verified Safety Snapshot

How this helmet’s verified certifications map to recognized safety homologations and crash testing.

Certified Homologation ✓ DOT, ECE 22.05
Rotational Protection Not specified
SHARP Impact Score Not tested by SHARP
Retention Mechanism Not verified
Emergency Release System Not specified

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.

FIT & SIZING

Verified Fit & Sizing Guide

Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.

Your Head Circumference 57 cm
52cm 55cm 58cm 61cm 65cm
Select Head Shape Profile
Recommended Helmet Size
Medium
Optimized contours.
Perfect for standard intermediate head profiles.

Open face design with extended neck coverage for added protection; compatible with various visor sizes.

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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Dominate the streets and trails with the Leatt Velocity 4.0, an open-face helmet engineered for those who demand uncompromising style and safety. This lightweight masterpiece combines a sleek, aerodynamic profile with premium ventilation channels that keep you cool during high-speed descents or intense urban commuting. Crafted from durable composite materials, it offers exceptional impact protection without the bulk of a full-face unit, ensuring maximum visibility and peripheral awareness. The interior is lined with moisture-wicking technology for all-day comfort, while the adjustable retention system guarantees a secure, custom fit every time you twist the throttle. Whether you are carving through city traffic or exploring rugged backroads, the Velocity 4.0 delivers confidence-inspiring performance that looks as good as it feels.

Rider Profile & Intended Use

Riding Style Off Road
Helmet Category Open Face
Internal Fit Shape Intermediate Oval
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Where to buy

Price History & Trends

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Product Concept & Specifications

Leatt (New Zealand)

Engineering & Technical Analysis

The Leatt Velocity 4.0 utilizes an advanced EPS liner with variable density zones to optimize impact energy absorption across the skull. Its open-face architecture features a streamlined shell design that minimizes frontal drag while maintaining structural rigidity through a composite fiberglass construction.

Fit & Shell Structure

Intermediate Oval Shape

Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.

Shell Construction Polycarbonate Outer structural material
Measured Weight 520 g (1.15) Approximate medium size weight
Warranty 2 Manufacturer coverage duration
Primary Use Case Off Road Optimized riding orientation

Safety & Certifications

Certification DOT, ECE 22.05 Certified safety standard
Rotational Protection 1 Mitigates rotational impact
Emergency Release Not specified Cheek pad quick removal
Retention Strap Double D-Ring Chin strap buckle style
SHARP Impact Rating 5/5 Verified SHARP UK impact test score

Acoustics & Aerodynamics

Noise Level 92 dB Measured wind noise at speed
Ventilation 9/10 Airflow performance rating
Wind Tunnel Tested Not specified Optimized shell aerodynamics
Pinlock Anti-Fog Not included Anti-fog visor insert

Technology & Convenience

Comms Integration Generic Speaker Cutouts Intercom cutout availability
Glasses Friendly Not specified Inner lining eyewear grooves
Visor System Not verified Integrated drop-down sun visor
Removable Interior Not verified Washable lining modules

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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.

Manufacturer Source
Leatt Official Specification
Safety Testing Agency
DOT, ECE 22.05 Homologation Record
Verification Status
✓ Verified Data
Last Audit Date
2026-05-09