Global Helmet Intelligence Platform

GMAX · AT-21S · GMax AT-21S

GMax AT-21S Gloss Black

DOT, ECE 22.06

About the GMax AT-21S Gloss Black

Adventure/Dual Sport

The GMax AT-21S is engineered for the versatile rider who demands performance both on the pavement and off the beaten path. Combining sleek, modern styling with advanced aerodynamic shell geometry, this helmet minimizes wind buffeting at higher speeds while maintaining a lightweight profile that reduces neck fatigue during long-distance adventures. The advanced channeling ventilation system is strategically designed to optimize airflow, effectively regulating internal temperature and preventing visor fogging in varying climate conditions. Vision is prioritized through an optically correct, wide-port face shield that offers superior peripheral awareness, ensuring you stay focused on the trail ahead. Built with a durable polycarbonate shell, the AT-21S provides robust impact protection without compromising on comfort. The interior features a plush, moisture-wicking liner that is fully removable and washable, complemented by adjustable cheek pads to ensure a personalized, secure fit. Whether you are navigating technical dual-sport terrain or commuting through urban environments, the GMax AT-21S delivers the perfect balance of safety, comfort, and functional versatility for the modern adventure enthusiast.

DOT, ECE 22.06 🧠 Intermediate Oval 🏷️ AT-21S Family 🛡️ Polycarbonate 📋 1 year warranty 🎯 Dual Sport 💰 Mid Range

Technical Analysis

The GMax AT-21S features a polycarbonate shell for lightweight durability and an intermediate oval fit for a secure, comfortable feel. Its adventure-ready design includes adjustable ventilation to manage airflow, while the dual-sport construction balances off-road protection with on-road practicality. The helmet incorporates safety tech like reinforced impact absorption and a moisture-wicking interior for long-ride comfort.

Feature Highlights

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

Safety Intelligence

Homologation

DOT

Rotational Tech: None

SHARP Rating

☆☆☆☆☆

Features & Comfort

Noise @ 100kph
92 dB
Ventilation Score
7/10
Comms Ready
Generic Speaker Cutouts

Product Details

SKUGMA-AT21-BLK
Color FamilyBlack
FinishGloss
Helmet FamilyAT-21S
Weight1650g / 3.64 lbs
Shell MaterialPolycarbonate
Head ShapeIntermediate Oval
CertificationsDOT, ECE 22.06

Where to buy

Marketplace Price Availability Updated
Amazon (US) $149.95 ● In Stock 1 second ago Buy Now →

Price History

Available Colors & Graphics

Compare & buy

Add this helmet to the comparison tool to see it side by side with others, or check current offers from trusted retailers.

More from GMAX