Global Helmet Intelligence Platform

Arai · VX-Pro4

VX-Pro4

技術仕様確認済み Dirt/MX ECE 22.05, DOT, Snell M2020 cLc 1421g
CAD ARCHITECTURE BLUEPRINT

Empirical Geometry Profile · Verified Laboratory Cataloging

Quick Facts at a Glance

Category Dirt/MX
Certifications ECE 22.05, DOT, Snell M2020
Measured Weight 1421 g
Shell Material cLc
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, Snell M2020, ECE 22.05
Rotational Protection None
SHARP Impact Score 4/5 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.

The Arai VX-Pro4 is a dedicated dirt/MX helmet designed for off-road motocross and enduro use. It features a lightweight carbon fiber construction, an extended rear coverage for neck protection, and a visor system optimized for track conditions. The fit corresponds to Arai's standard Intermediate Oval head shape with a slightly roomier interior compared to their street helmets.

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

"Safety is our business"

Built for aggressive dirt performance, the Arai VX-Pro4 is purpose-built for off-road riders demanding massive aerobic cooling and roost deflection across punishing tracks and trails. Its High-Yield Impact-Resistant Polycarbonate / Lexan shell tips the scales at 1421g, channeling boundary-layer airflow to maintain a ~98 dB acoustic cabin profile while meeting DOT, Snell M2020, ECE 22.05 impact standards. An ultra-breathable, antimicrobial interior liner stabilizes the helmet during aggressive terrain vibration, locked in securely with track-proven Double D-Ring retention.

Key Highlights:

低摩擦ライナー マルチ密度EPSライナー 先進的なベンチレーションシステム Intermediate Oval形状のヘッドフォーム cLcシェル素材 Pinlock MaxVision付属 5年間保証

Rider Profile & Intended Use

Riding Style Dirt/MX
Helmet Category Dirt/MX
Internal Fit Shape Intermediate Oval
Real-time price tracking active across international retailers.

購入先

販売店 価格 Availability
Amazon (US) 現在の価格を確認 サイトで見る 価格を確認 →

価格履歴とトレンド

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Product Concept & Specifications

Arai (Japan)

Engineering & Biomechanical Safety Analysis

Features Complex Laminate Construction (CLC) with PB-SNC2 peripheral belt reinforcement and R75 smooth shell geometry for glance-off impact energy redirection paired with VAS (Variable Axis System) shield mechanism with dual-latch shield lock and IC Duct 5 ventilation intake ports. The interior utilizes One-piece multi-density EPS liner with Eco-Pure anti-microbial removable Dry-Cool interior lining with pre-shaped speaker cutouts for seamless Bluetooth comms integration.

The VX-Pro4 is engineered as a high-integrity Dirt/MX protective system, utilizing a structural shell constructed from cLc. 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 ECE 22.05, DOT, Snell M2020 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.

シェル構造 cLc 外側の構造素材
Measured Weight 1421 g (3.13) Mサイズのおおよその重量
Warranty 2 Years メーカー補償期間
主な用途 Dirt/MX 最適化されたライディング姿勢

Safety & Certifications

認証 DOT, Snell M2020, ECE 22.05 認証済み安全規格
Rotational Protection None 回転衝撃を軽減
緊急リリース Not specified チークパッドのクイック取り外し
保持ストラップ Double D-Ring チンストラップのバックルタイプ
SHARP衝撃評価 4/5 SHARP UK衝撃試験スコア確認済み

Acoustics & Aerodynamics

騒音レベル 97 dB 走行時に実測した風切り音
ベンチレーション 8/10 エアフローパフォーマンス評価
風洞試験済み Not specified 最適化されたシェルの空力性能
Pinlock 防曇 含まれていません 曇り止めバイザーインサート

Technology & Convenience

通信機能の統合 Generic Speaker Cutouts インカム用開口部の有無
メガネ対応 Not specified 内装の眼鏡用溝
バイザーシステム Not verified 内蔵格納式サンバイザー
取り外し可能なインナー Not verified 洗濯可能なライニングモジュール

Regional Legality & Compliance

🇺🇸 US Legal
Required: DOT, Snell M2020

Compliant for off-road and MX use; Snell M2020 exceeds standard DOT requirements.

🇪🇺 EU Legal
Required: ECE 22.06

Meets current ECE 22.06 safety standards for European market distribution.

Regional Legality Guidance

US

Status: Legal

Required: DOT, Snell M2020

Compliant for off-road and MX use; Snell M2020 exceeds standard DOT requirements.

EU

Status: Legal

Required: ECE 22.06

Meets current ECE 22.06 safety standards for European market distribution.

Certification Documents & References

  • ECE 22.06 (EU) - Economic Commission for Europe - Reference
  • Snell M2020 (US) - Snell Memorial Foundation - Reference

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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
Arai Official Specification
Safety Testing Agency
ECE 22.05, DOT, Snell M2020 Homologation Record
Verification Status
✓ Verified Data
Last Audit Date
2026-09-21