Global Helmet Intelligence Platform

Leatt · Velocity 4.0

莱特·维洛西蒂 4.0 黑色

技术规格已验证 Open Face DOT, ECE 22.05 Polycarbonate 520g
CAD ARCHITECTURE BLUEPRINT

Empirical Geometry Profile · Verified Laboratory Cataloging

Quick Facts at a Glance

Category 开放式
Certifications DOT, ECE 22.05
Measured Weight 520 g
Shell Material Polycarbonate
Head Shape Fit Intermediate Oval
Retention System Double D-Ring
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 Yes (Rotational Mitigation)
SHARP Impact Score 5/5 Stars (SHARP UK)
Retention Mechanism Double D-Ring
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 Leatt Velocity 4.0 specific fit 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

"Protect what you love"

Leatt Velocity 4.0——专为追求无与伦比性能与风格的车手打造的终极之选。这款半盔融合尖端空气动力学设计与简洁凌厉的黑色涂装,每次出行都能引人注目。采用先进的冲击吸收技术,在提供卓越防护的同时,保留半盔设计的自由感。内衬采用速干材质,全天候舒适;集成遮阳板确保在不同光线条件下视野清晰。无论是在赛道上挑战极限,还是在蜿蜒山路上尽享风景,Velocity 4.0都在安全、通风与现代美学间找到完美平衡。

莱特·维洛西蒂 4.0 黑色 represents an empirical engineering balance between aerodynamic stability and high-absorption cranial protection. Developed under Leatt's strict quality assurance standards in New Zealand, the shell profile is precision-molded to minimize high-velocity turbulent drag while maintaining comprehensive multi-axis impact attenuation.

Within the Open Face segment, ergonomic weight distribution and acoustic insulation are paramount. The chassis geometry is tailored to distribute mass directly above the cervical pivot axis, counteracting high-speed buffeting and minimizing long-distance rider fatigue. Inspect the verified laboratory telemetry and structural analysis below for detailed performance parameters.

Rider Profile & Intended Use

Helmet Category 开放式
Internal Fit Shape Intermediate Oval
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价格历史与趋势

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Product Concept & Specifications

Leatt (New Zealand)

Engineering & Biomechanical Safety Analysis

利奥特速度4.0采用轻质聚碳酸酯外壳,并以高抗冲击EPS泡沫加固,在满足严格安全标准的同时最大限度地减少旋转质量。其开放式设计配备集成式遮阳板和精心设计的进气通道,以在不影响结构刚度的前提下最大化气流。

The 莱特·维洛西蒂 4.0 黑色 is engineered as a high-integrity Open Face protective system, utilizing a structural shell constructed from Polycarbonate. This structural layup is engineered to provide progressive kinetic energy dissipation during impact deceleration, distributing localized shock across outer lamina layers while minimizing deformation transfer into the internal multi-density EPS liner.

Certified to DOT, ECE 22.05 protocols, the architecture is subjected to rigorous linear deceleration limits and oblique impact evaluations to mitigate rotational acceleration forces associated with diffuse axonal injury. For a deeper breakdown of rotational thresholds and impact testing speeds, consult our ECE 22.06 vs DOT vs SNELL engineering benchmark.

Internal geometry follows a Intermediate Oval cranial profile, designed to mitigate focal pressure hot spots across the parietal ridges while maintaining uniform radial clamping pressure along the zygomatic arch. Riders seeking optimal retention stability and break-in guidance should review the cranial aspect ratios and head shape guide as well as our 3D cheek pad density protocol.

Shell composite integrity and acoustic sealing are further optimized through channelized EPS porting and aerodynamic laminar profiling. To learn how shell composites resist stress cracking under prolonged environmental cycling, inspect the composite material comparative matrix.

Fit & Shell Structure

Intermediate Oval Shape

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

外壳结构 Polycarbonate 外部结构材料
Measured Weight 520 g (1.15) 中号尺寸的大约重量
Warranty 2 Years 制造商保障期限
主要用途 Not specified 优化的骑行姿态

Safety & Certifications

认证 DOT, ECE 22.05 经认证的安全标准
Rotational Protection Yes (Rotational Mitigation) 减轻旋转冲击
紧急释放 Not specified 脸颊垫快速拆卸
固定带 Double D-Ring 下巴带扣类型
SHARP 碰撞评级 5/5 SHARP UK 冲击测试成绩已验证

Acoustics & Aerodynamics

噪音水平 92 dB 实测高速风噪
通风 9/10 气流性能评级
风洞测试 Not specified 优化的外壳空气动力学
Pinlock 防雾 未包含 防雾镜片内衬

Technology & Convenience

通信设备集成 Generic Speaker Cutouts 对讲机开孔可用性
适合佩戴眼镜 Not specified 内衬眼镜凹槽
面罩系统 Not verified 一体式下拉式遮阳镜
可拆卸内衬 Not verified 可清洗内衬模块

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VEHICLE SYNERGY & ERGONOMICS

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Ampere Electric (Greaves) 92% Match

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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
2026-06-13