Giro Phase

Priced: $37.49 - $75.00 Rated:   - 5 stars out of 5 by 3 reviews.
Giro Phase
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Available Colors:
Jenson USA (2013)
50% off
Regularly: $75.00
Campmor (2013) (closeout)
(close out from 2013)
41% off
Regularly: $75.00
Sierra Trading Post $52.95
29% off
Regularly: $75.00
Al's Sports $74.99 $75.00
The House $75.00
REI $75.00
Jenson USA (2014)
$75.00 $75.00
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Giro Phase -
Giro Phase Helmet Special Order 2013.

The light, cool, and durable Giro Phase is an excellent choice for budget conscious riders looking for a low-profile helmet with high-level performance. Just because it's cheaper than Giro's top shelf models doesn't mean it doesn't share some of the main features, the major one being Giro's Roc Loc 5 system. Giro spent two years fine tuning the Roc Loc fit system to bring you Roc Loc 5, a groundbreaking fit system with an unmatched level of comfort, stability, adjustability, and weight savings. With Roc Loc 5, you can easily dial-in both fit tension and adjust vertical position with a single hand. Twist the ratcheting, micro-adjusting dial for a tighter fit on rough terrain, and back it off a bit to relax across the flats or up a warm climb. A three-position bracket allows for 15 millimeters of up/down movement for easy fine-tuning of vertical positions. Even with these impressive features, Roc Loc 5 is 40 percent lighter than its popular predecessor, Roc Loc 4. 27 vents provide plenty of ventilation and a Snap-fit 2 visor keeps the sun out of your eyes.



  • In-mold construction fuses a polycarbonate outer shell with an impact-absorbing foam liner
  • In-mold construction and internal reinforcement make this helmet ready for impact to protect your brain and your new sexy coif


  • Snap-fit 2 visor
  • Acu-Dial fit system can be adjusted with a single hand for a comfortable, secure fit
  • Slim, durable Acu Dial 2 fit system offers one-handed adjustment


  • Highly tuned, 27-vent design provides superior cooling
  • 24 vents
  • Wind Tunnel ventilation system combines active vents with internal exhaust channels that thrust cool air over the head and force hot air out

Weather and Wind:

  • The Giro Phase Bike Helmet features a detachable visor for added protection from sun, rain and the occasional branch


  • Made in Chile


  • In-Mold technology bonds the helmet's tough outer microshell to the impact-absorbent expanded polystyrene liner, creating a light, cool and strong helmet
  • US shipments only
  • The Phase covers many riding styles like Recreational MTB, MTB Trail Ride, Touring or Urban/Commuting
  • Roc Loc® 5
  • Super value in a low-profile helmet.
Safety is key whether you're barreling down those singletrack drops or tackling that monster climb. Secure what counts the most with the Phase bike helmet from Giro™.
Ideal for touring, recreational MTB, MTB trail riding, and urban commuting.
In-mold construction process permanently fuses a light, yet hardy polycarbonate outer shell with the EPS foam liner to create a more durable bicycle helmet.
Acu Dial™ 2 fit system combines the ease of single-handed fit tension adjustment with multiple fit belt anchor points, allowing for a wider and finer range of adjustment. It's also pony tail compatible to accommodate riders with longer hair.
throughout the helmet for optimal breathability.
helps block out harsh light.
Sierra Trading Post
With its low-profile design and convenient Acu Dial 2 fit system, Giro's Phase cycling helmet helps you move into the next phase of your off-road ride in cool comfort.

The House

First and foremost, a mountain bike helmet should be comfortable and durable. The Phase™ is true to the core—light, cool and durable enough to handle even the most daunting climbs and rock-strewn ribbons of singletrack. With the easy fit and adjustability of Roc Loc® 5 and the comfort of Super Fit™ sizing, it’s a top performer for riders looking for a low-profile helmet at a great price.


A low-profile mountain bike helmet, the Giro Phase is cool, durable and designed to offer protection for daunting climbs and rock-strewn ribbons of singletrack.


Al's Sports
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 and Urban/Commute
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Average Price History: Price History
Review RatingNumber of Reviews
Activity:Mountain biking
Fit system:AcuDial fit system
Head circumference:Mountain biking
Helmet style:Mountain biking
Suggested use:Recreational MTB, MTB Trail Ride, Touring, Urban/Commute
Compare specifications to related products.

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Giro Phase Reviews:

Positive Reviews:

Good Buy

Have worn helmet in windy conditions on open trails and in deep woods on singletrack. Gives great protection and ventilation.
Teigr Meddyg at REI on 01/01/2014

right on target

I had to return the helmet because my daughter had already purchased one for herself.
mike the biker at Campmor on 01/01/2014

Neutral Reviews:

Sturdy but heavy helmet

In some circumstances I would recommend. As a hardcore road rider, I was looking for a helmet with a visor to combat high glare or low sun. I got that but was surprised at how heavy the helmet is.
Drew in Delaware at Campmor on 01/01/2014