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GMAX AT-21 Adventure Helmet


GMAX Helmets

Model #G1210028


Matte Black



Shopper Award

GMAX® is excited to introduce the ALL NEW AT-21 designed competitively from the ground up. The AT-21 is constructed from a lightweight Polycarbonate shell offering superior protection and exceeds DOT and ECE safety certifications. This helmet is made in 3 shell sizes, from youth to adult, offering a lightweight shell for any adventure. Internally, the helmet is equipped with an inner sun shield, SpaSoft™ interior and recessed speaker pockets for communication systems. The removable interior with COOLMAX® CORE Technology wicks moisture away from the body and is designed to keep you dry and comfortable during your journey. Enjoy your adventure with the all new AT-21 from GMAX®.


  • ECE / DOT Approved
  • Quick release buckle system
  • Lightweight Polycarbonate shell. Adult large 3.6lbs. Youth shell 3 lbs
  • Removable, adjustable, and washable antimicrobial SpaSoft™ interior allows for easy cleaning and custom fitting
  • Drop down sun shade with anti-fog coating
  • Recessed speaker pockets in the EPS for communication systems
  • Optional LED light and brake light kit available

Other Part Numbers:
GMAX Helmets #72-45002X

Proposition 65

/!\ warningWARNING: Cancer and Reproductive Harm

Who is GMAX Helmet?

GMAX Helmet, LLC was founded in 1999. It was started by a group of enthusiasts who decided to create their brand of motorcycle helmets. By partnering with a manufacturer known for producing and developing high-quality helmets in the Powersports industry, they can make their line cater to various motorcycle riders. Today, they have given many motorcycle riders a cheaper alternative for quality helmets without compromising on safety.

Helmets For Your Every Need

Gmax offers various helmet styles and designs from half face, open face, modular to full-face helmets. They also have helmets designed for the street, for offroading, snow helmets, and ADV helmets. Gmax has proven that quality products do not always have to be expensive.

Helmets That You Can Trust

All of their helmets are designed to meet the standards required by the regulators and the company. Each helmet is designed to provide optimum protection while maintaining a comfortable fit. Their lenses are 100% UV400 protected, which are the same kind of lenses you find on those more expensive gears.

Purchase Gmax Helmet at Vivid Racing

If you are looking for an affordable helmet that can still protect you in case of an accident, then look no further, as Gmax has got you covered. Why settle for those cheap knock-offs helmets when you can get quality helmets at a fraction of the cost. To know more about Gmax and what they can offer, visit Vivid Racing and check out their list of products that fit your specific requirement.

GMAX Warranty

At GMAX Helmets, we pride ourselves in partnering with the factory to create a superior product that meets high quality and safety standards. As enthusiasts with years of experience, the attention to detail and material knowledge is what makes a good product great. We believe and stand behind our 3-year warranty.

GMAX warranty guarantees that our products are free from defects in materials and workmanship. This warranty does not cover damage due to an accident, normal wear and tear and natural break down of colors and materials over time. This limited warranty will cover replacement parts/repair, labor and service to repair the helmet. Some restrictions may apply.

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