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GMax · AT-21S

GMax AT-21S Urban TC-1

DOT, ECE 22.06

GMax AT-21S Urban TC-1
GMax AT-21S Urban TC-1
GMax AT-21S Urban TC-1

Design Story & Interactive HUD

GMax (United States)
"Built for Speed"

The Narrative

GMax AT-21S专为兼顾公路与越野性能的全能骑手打造。该头盔融合流畅现代的外观设计与先进的空气动力学外壳几何结构，在高速行驶时有效减少风阻，同时保持轻质设计以减轻长途骑行中的颈部疲劳。其先进的导流通风系统经过精心设计，优化气流分布，有效调节内部温度，并在不同气候条件下防止面罩起雾。光学级宽视野面罩提供卓越的周边视觉，确保您始终专注于前方路况。采用坚固的聚碳酸酯外壳，AT-21S在保证舒适性的同时提供可靠的冲击防护。内衬采用柔软的吸湿排汗材质，可完全拆卸清洗，并配

Technical Analysis

GMax AT-21S Urban TC-1采用聚碳酸酯外壳，轻质耐用且抗冲击，确保优异的安全标准。其中等椭圆形头盔外形为大多数骑手提供贴合舒适的佩戴感受，而探险/双用途设计则配备先进通风系统，在多变环境中保持凉爽。该头盔在保护性、舒适性和气流之间达到平衡，适合长途骑行及越野探险。

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 $199.95 Amazon (US)
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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 — $199.95

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