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    • Giro Phase Helmet 2014

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Giro Phase Helmet

The Phase is compact, cool, and durable enough to handle even the most daunting climbs and rock-strewn ribbons of singletrack. And it’s a super value for riders who want high-profile performance in a low-profile helmet.


  • Suggested Use: Recreational MTB, MTB Trail Ride, Touring, Urban/Commute
  • Features: Snap-fit 2 visor
  • Construction: In-mold - EPS liner, polycarbonate shell
  • Fit System: Acu Dial ™ 2
  • Ventilation: 27 vents


  • ACU Dial ™ - 2 Our Acu Dial 2 fit system offers the convenience of single-handed adjustment, plus variable-fit belt anchor points providing a brilliant fit and feel. Acu Dial 2 is slim, durable, and even ponytail-compatible.
  • Super Fit™ Engineering For Bike Helmet - A great helmet is so comfortable that once it’s on, it virtually disappears. Our proprietary three-size Super Fit system is based on “human scale factors” data and over 20 years of crafting helmets for the best bike riders in the world. The result is pure Skull Hugging Luxury™, a helmet that fits 98% of the world’s population, yet looks (and fits) like it was custom made just for you.

Fit guide (PDFs): Measuring tape | Sizing Chart

This helmet conforms to, or exceeds EU Standards only.

Buy Giro Helmets from Chain Reaction Cycles, the World’s Largest Online Bike Store.

  • Delivery costFREE
  • Delivers toUnited States of America
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or fitted.

    More information on returns
  • Pay by Bank Transfer, PayPal or Card


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