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AT4.0 CARBON

2918 reviews
Rated 4.5 out of 5 stars
5 stars (2225)
4 stars (279)
3 stars (144)
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AT4.0 CARBON is the fourth generation of the AT full-face motorcycle helmet. This iconic Carbon fibre helmet features a super-tough lightweight shell, ultra-wide field-of-view and RHEON impact technology integrated into the plush multi-density interior liner. With DOT FMVSS 218 & ECE 22.06 certification and compatibility with our full Bluetooth audio with our Shockwave unit, the AT4.0 CARBON is the ultimate street helmet

Discover AT4.0 CARBON AT4.0 CARBON Fit Guide
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    30% Off Motorcycle Helmets & Accessories
  1. Frenzy Frenzy
    AT4.0 CARBON
    Frenzy
    $525.00
  2. Jormungandr Jormungandr
    AT4.0 CARBON
    Jormungandr
    $525.00
  3. 30% OFF
    Core Core
    AT4.0 CARBON
    Core
    $332.50 $475.00
  4. The Joker The Joker
    AT4.0 CARBON
    The Joker
    $575.00
  5. The Batman The Batman
    AT4.0 CARBON
    The Batman
    Out of stock
  6. Disarray Disarray
    AT4.0 CARBON
    Disarray
    $525.00
  7. Titanium Titanium
    AT4.0 CARBON
    Titanium
    $475.00
  8. Fenrir Fenrir
    AT4.0 CARBON
    Fenrir
    $525.00
  9. Liquid Carbon Liquid Carbon
    AT4.0 CARBON
    Liquid Carbon
    $595.00
  10. 30% OFF
    Ruby Carbon Ruby Carbon
    AT4.0 CARBON
    Ruby Carbon
    $416.50 $595.00
  11. Harley Quinn Harley Quinn
    AT4.0 CARBON
    Harley Quinn
    $575.00
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  1. XS (3)
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  1. Carbon fiber (11)
  2. Rheon (11)
  3. Fidlock chinstrap (11)
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  1. 2025 Design Range (2)
  2. DC (3)
  3. Liquid Carbons (2)
  4. Ragnarok (2)
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  1. Black (6)
  2. Carbon (1)
  3. Gold (1)
  4. Green (1)
  5. Grey (2)
  6. Red (2)
  7. White (2)
Find your size
We recommend:
How to measure
  1. With a fabric measuring tape, wrap it around your head just above your eyebrows and ears.
  2. Pull the tape comfortably tight. Take the measurement.
  3. Repeat once more and go with the largest reading.

Our motorcycle and snow helmet fit is an intermediate oval.

Returns policy

If the fit is not quite right our return process is simple. 14 days to exchange, picked up from home. See our returns page for more details.