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GMax · AT-21S

GMax AT-21S Anthrazit

DOT ECE 22.06
GMax AT-21S Anthrazit
GMax AT-21S Anthrazit
GMax AT-21S Anthrazit

Design Concept & Background

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GMax AT-21S Anthrazit is a high-performance motorcycle helmet engineered by GMax to meet high standards of safety and comfort. Inspect its detailed design background and specifications below.

Key Highlights:

Polycarbonate shell Advanced channeling ventilation Adjustable cheek pads Removable and washable liner Wide eye port for superior peripheral vision

Rider Profile & Intended Use

Riding Style Dual Sport
Internal Fit Shape Intermediate Oval
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Where to buy

Best price $149.95 Amazon (US)
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Price History

Product Concept & Specifications

GMax (United States)

Engineering & Technical Analysis

Der GMax AT-21S Anthrazit verfügt über eine Polycarbonat-Schale für leichte Haltbarkeit und eine ovale Passform mit mittlerer Weite für einen sicheren, bequemen Sitz. Er bietet eine fortschrittliche Belüftung mit verstellbaren Einlass- und Auslassöffnungen für optimalen Luftstrom, während die feuchtigkeitsableitende Innenpolsterung den Komfort bei langen Fahrten erhöht. Die Sicherheit wird durch eine mehrlagige EPS-Innenschale und einen verstärkten Kinnriemen zum Schutz vor Aufprallen verstärkt. Das Adventure-/Dual-Sport-Design vereint Geländetauglichkeit mit Straßenflexibilität.

Fit & Shell Structure

Intermediate Oval Shape

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

[MATR.SHEL] Shell Construction Polycarbonate Outer structural material
[PHYS.MASS] Measured Weight 1650g (3.64) Approximate medium size weight
[COVG.YEAR] Warranty 1 Manufacturer coverage duration
[OPER.ROLE] Primary Use Case Dual Sport Optimized riding orientation

Safety & Certifications

[SYS.CERT] Homologation DOT Certified safety standard
[SYS.PROT] Rotational Protection None Mitigates rotational impact
[SYS.EQRS] Emergency Release Not Equipped Cheek pad quick removal
[SYS.LOCK] Retention Strap Double D-Ring Chin strap buckle style

Acoustics & Aerodynamics

92 dB
Acoustics
7 /10
Ventilation

Quiet Index: Superior sound damping and isolated ear cavity structures. Good flow balance utilizing EPS exhaust ports.

[AERO.TEST] Wind Tunnel Tested No Optimized shell aerodynamics
[VISR.FOG] Pinlock Tech Not Included Anti-fog shield insertion

Technology & Convenience

[SYS.COMM] Comms Integration Generic Speaker Cutouts Intercom cutout availability
[FIT.GLASS] Glasses Friendly No Inner lining eyewear grooves
[VISR.SYS] Visor Shield Tech Single Visor Integrated drop-down sun visor
[FIT.LINR] Removable Interior Partial / Fixed Washable lining modules

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