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Arai · Signet-X

Arai Signet-X Course TC-3

技術仕様確認済み Full Face DOT, Snell M2020 PB-cLc 1580g
CAD ARCHITECTURE BLUEPRINT

Empirical Geometry Profile · Verified Laboratory Cataloging

Quick Facts at a Glance

Category フルフェイス
Certifications DOT, Snell M2020
Measured Weight 1580 g
Shell Material PB-cLc
Head Shape Fit Long 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
Rotational Protection PB-cLc shell
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.

True Long Oval head shape, specifically designed for riders with a longer front-to-back and narrower side-to-side head profile. Offers a snug, secure fit typical of Arai's professional-grade touring 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"

The Arai Signet-X Course TC-3 represents the pinnacle of helmet engineering for riders who demand a perfect fit and uncompromising safety. Specifically designed for those with a long oval head shape, this premium touring helmet eliminates the pressure points often found in standard helmets, ensuring all-day comfort on the longest journeys. Its advanced PB-cLc shell construction provides exceptional impact resistance while maintaining a lightweight profile. Aerodynamics are refined through Arai’s signature wind-tunnel-tested design, which minimizes drag and reduces fatigue at highway speeds. The ventilation system is a masterclass in airflow, featuring a unique diffuser top and forehead vents that channel cool air directly into the helmet, keeping you refreshed in varying climates. Vision is equally prioritized with the included Pinlock MaxVision system, offering a clear, fog-free view in all weather conditions. With its sophisticated styling, superior acoustic performance, and the legendary Arai build quality, the Signet-X Course TC-3 is the ultimate companion for the discerning touring enthusiast who refuses to compromise on protection or comfort.

Key Highlights:

周辺ベルト補強を施した複合ラミネート構造 ロングオーバル形状 調整式ベンチレーションシステム 3D Max-Dryシステム PB-cLcシェル DOTおよびSnell M2020認証取得 5年間保証 Pinlock MaxVision付属

Rider Profile & Intended Use

Riding Style ツーリング
Helmet Category フルフェイス
Internal Fit Shape Long 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

ℹ️ Helmetsanは、独立したオートバイの安全性・意思決定エンジンです。価格を確認したり、小売店のリンク経由で購入したりすると、追加費用なしでHelmetsanがアフィリエイト報酬を受け取る場合があります。

Product Concept & Specifications

Arai (Japan)

Engineering & Biomechanical Safety Analysis

The Arai Signet-X Course TC-3 features a PB-cLc shell, providing excellent impact resistance and durability. It offers a comfortable fit with adjustable cheek pads and a long oval head shape, accommodating various head sizes. Ventilation is enhanced through a unique diffuser top and forehead vents, ensuring a cool and dry riding experience.

The Arai Signet-X Course TC-3 is engineered as a high-integrity Full Face protective system, utilizing a structural shell constructed from PB-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 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 Long 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

Long Oval Shape

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

シェル構造 PB-cLc 外側の構造素材
Measured Weight 1580 g (3.48) Mサイズのおおよその重量
Warranty 1年 メーカー補償期間
主な用途 ツーリング 最適化されたライディング姿勢

Safety & Certifications

認証 DOT, Snell M2020 認証済み安全規格
Rotational Protection PB-cLc shell 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 88 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 Street Legal
Required: DOT

Complies with DOT and Snell M2020 standards

🇪🇺 EU Street Legal
Required: ECE 22.06

Complies with ECE 22.06 standard

Regional Legality Guidance

US

Status: Street Legal

Required: DOT

Complies with DOT and Snell M2020 standards

EU

Status: Street Legal

Required: ECE 22.06

Complies with ECE 22.06 standard

Certification Documents & References

  • ECE 22.06 (EU) - Economic Commission for Europe - Reference

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VEHICLE SYNERGY & ERGONOMICS

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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
DOT, Snell M2020 Homologation Record
Verification Status
✓ Verified Data
Last Audit Date
2026-09-21