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GMax · AT-21S

GMax AT-21S 石墨色

DOT, ECE 22.06

GMax AT-21S 石墨色
GMax AT-21S 石墨色
GMax AT-21S 石墨色

Design Story & Interactive HUD

GMax (United States)
"Built for Speed"

The Narrative

GMax AT-21S 专为追求公路与越野双重性能的全能型骑手打造。融合流畅现代的外观与先进的空气动力学外壳设计，该头盔在高速行驶时有效减少风阻，同时保持轻量化设计，降低长途骑行时的颈部疲劳。先进的导流通风系统精心设计，优化气流，有效调节内部温度，并在不同气候条件下防止面罩起雾。采用光学级精准的宽视野面罩，提供卓越的周边视觉，确保您专注于前方路况。坚固的聚碳酸酯外壳为 AT-21S 提供可靠的冲击防护，同时不牺牲舒适性。内衬采用柔软的速干材质，可完全拆卸并水洗，并配有

Technical Analysis

GMax AT-21S 炭黑色头盔采用聚碳酸酯外壳，轻质耐用且符合中等椭圆形头型，贴合舒适。配备可调进排气口的先进通风系统，优化气流；内部采用速干内衬，长途骑行更舒适。安全性通过多密度EPS衬垫及加固下颌带增强。其探险/双用途设计在越野坚固性与公路通用性间取得平衡。

Feature Highlights

Polycarbonate shell Advanced channeling ventilation Adjustable cheek pads Removable and washable liner Wide eye port for superior peripheral vision
Homologation DOT Certified safety standard
Rotational Protection None Mitigates rotational impact
Emergency Release Not Equipped Cheek pad quick removal
Retention Strap Double D-Ring Chin strap buckle style
Acoustics Quietness 92 dB

Extremely Quiet: Superior long-distance sound damping.

Ventilation Flow 7/10

Good Flow: Standard EPS exhaust ports.

Wind Tunnel Tested No Optimized shell aerodynamics
Pinlock Tech Not Included Anti-fog shield insertion
Comms Integration Generic Speaker Cutouts Intercom cutout availability
Glasses Friendly No Inner lining eyewear grooves
Visor Shield Tech Single Visor Integrated drop-down sun visor
Removable Interior Partial / Fixed Washable lining modules

Intermediate Oval Shape

Intermediate oval fit, the standard ergonomic profile suited for the majority of riders.

Shell Construction Polycarbonate Outer structural material
Measured Weight 1650g (3.64) Approximate medium size weight
Warranty 1 Manufacturer coverage duration
Primary Use Case Dual Sport Optimized riding orientation
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Where to buy

Best price $149.95 Amazon (US)
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Amazon (US) Store Profile
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Price History

Interactive Size & Fit Finder

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.

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.

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Check Price — $149.95

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