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24,000+ Reviews | 4.5/5 Excellent
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ECE 22.06 | DOT 3 year helmet warranty

AT4 CARBON

3437 reviews
Rated 4.5 out of 5 stars
5 stars (2655)
4 stars (319)
3 stars (161)
2 stars (96)
1 star (206)
Sport

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 CARBON AT4 CARBON Fit Guide
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15 Items

    FREE SHOCKWAVE BLUETOOTH

    WITH SELECTED HELMETS

    THIS WEEK ONLY

    Built into AT4.0 CARBON

    RHEON™ Impact Protection

    Learn More
  1. 25% OFF
    The Joker The Joker
    AT4.0 CARBON
    The Joker
    $449.25 $599.00
  2. 25% OFF
    Fenrir White Fenrir White
    AT4.0 CARBON
    Fenrir White
    $411.75 $549.00
  3. 25% OFF
    Jormungandr Jormungandr
    AT4.0 CARBON
    Jormungandr
    $411.75 $549.00
  4. Core Core
    AT4.0 CARBON
    Core
    $499.00
    Free Shockwave Bluetooth
  5. 25% OFF
    Fenrir Fenrir
    AT4.0 CARBON
    Fenrir
    $411.75 $549.00
  6. 25% OFF
    Anarchy Anarchy
    AT4.0 CARBON
    Anarchy
    $411.75 $549.00
  7. 25% OFF
    Cthulhu Cthulhu
    AT4.0 CARBON
    Cthulhu
    $411.75 $549.00
  8. Liquid Carbon Liquid Carbon
    AT4.0 CARBON
    Liquid Carbon
    $625.00
    Free Shockwave Bluetooth
  9. 25% OFF
    Darkside Darkside
    AT4.0 CARBON
    Darkside
    $411.75 $549.00
  10. 25% OFF
    Oni Oni
    AT4.0 CARBON
    Oni
    $411.75 $549.00
  11. 25% OFF
    The Batman The Batman
    AT4.0 CARBON
    The Batman
    $449.25 $599.00
  12. BlackBird BlackBird
    AT4.0 CARBON
    BlackBird
    $549.00
    Free Shockwave Bluetooth
  13. 25% OFF
    Frenzy Frenzy
    AT4.0 CARBON
    Frenzy
    $411.75 $549.00
  14. 25% OFF
    Fusion Fusion
    AT4.0 CARBON
    Fusion
    $411.75 $549.00
  15. 25% OFF
    Catwoman Catwoman
    AT4.0 CARBON
    Catwoman
    $449.25 $599.00
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Size
  1. S (14)
  2. M (14)
  3. L (15)
  4. XL (15)
Price
Technology
  1. Carbon fiber (15)
  2. Smart medical ID (1)
  3. Rheon impact tech (15)
  4. Fidlock chinstrap (14)
Collection
  1. DC (3)
  2. Liquid Carbons (1)
  3. Ragnarok (3)
Color
  1. Black (11)
  2. Blue (1)
  3. Brown (1)
  4. Carbon (1)
  5. Gold (1)
  6. Green (3)
  7. Grey (1)
  8. Multi-Color (3)
  9. Red (4)
  10. White (5)
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.

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.