Leatt · Velocity 4.0
萊特速度 4.0
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.
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
"Protect what you love"
征服街道与崎岖小径,尽享Leatt Velocity 4.0——一款为追求无与伦比的风格与安全性的骑士打造的开放式头盔。这款轻量化杰作融合流畅的气动外形与顶级通风系统,在高速下坡或都市通勤时为您保持清凉。采用耐用复合材料打造,提供卓越的冲击防护,同时无需全脸头盔的笨重设计,确保最大视野与周边感知。内衬采用速干科技,全天候舒适;可调节束紧系统,每次扭动油门时都能提供安全贴合的定制体验。无论是在城市车流中穿梭,还是探索崎岖山路,Velocity 4.0都能为您带来信心满满的骑行体验,外观与手感同样出色。
萊特速度 4.0 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 motorcycle 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
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| 零售商 | 价格 | Availability | |
|---|---|---|---|
| Amazon (US) | 查看实时价格 | 在网站上查看 | 查看价格 → |
价格历史与趋势
ℹ️ Helmetsan 是一个独立的摩托车安全与决策引擎。当您查看价格或通过零售商链接购买时,Helmetsan 可能会获得联盟佣金,且不会向您收取额外费用。
Product Concept & Specifications
Leatt (New Zealand)Engineering & Biomechanical Safety Analysis
利特速度4.0采用先进的EPS衬垫,配备可变密度区域,以优化头骨的冲击能量吸收。其开放式面罩结构采用流线型外壳设计,在保持结构刚性的同时,通过复合玻璃纤维结构最大限度地减少正面阻力。
The 萊特速度 4.0 is engineered as a high-integrity motorcycle 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.
Safety & Certifications
Acoustics & Aerodynamics
Technology & Convenience
Interactive Size & Fit Finder
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.
Part numbers
| Product style | MFR. product # | SKU | Availability |
|---|---|---|---|
| Black / | — |
LEA-VEL4-BLK | instock |
| White / | — |
LEA-VEL4-WHT | instock |
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Compatible Motorcycles for the 萊特速度 4.0
Optimized for aggressive street carving, neutral forward-leaning stances, and high-efficiency brow airflow.
Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.