AT-21 / AT-21S Cold Weather Conversion Kit

GMAX AT-21 / AT-21S Cold Weather Conversion Kit

Upgrade your GMAX AT-21 or AT-21S street helmet for confident, cold‑weather riding. This complete kit enhances warmth, visibility, and comfort when temperatures drop.

• Dual Lens Shield: Reduces fogging for clearer vision in cold, wet, or variable conditions.
• Breath Deflector: Directs exhaled air away from the shield to minimize condensation.
• Thicker Chin Curtain: Blocks wind and drafts, improving insulation and noise reduction.

Designed for a seamless fit with the AT-21 and AT-21S, installation is quick and straightforward—no special tools required. Ride longer and more comfortably with improved thermal performance and dependable clarity.

Perfect for: Commuters, adventure riders, and touring enthusiasts facing cold climates or early‑morning rides.

Get the most from your helmet year‑round with the GMAX AT-21 / AT-21S Cold Weather Conversion Kit—smart protection against winter’s worst.