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Item # GIR007U Past Season Colors

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  • Matte Blue, L ($74.95)
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  • Matte Titanium/Flame, M ($74.95)
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Item # GIR007U

Enter the next Phase.

When the trail calls, the Giro Phase Helmet answers. It's loaded with everything you need to conquer the trail, and nothing you don't, all at a fair price.

The Phase is made via Giro's revolutionary In-Mold technology, which bonds the EPS foam liner to the exterior polycarbonate shell, saving weight and boosting breathability while also reinforcing the helmet's structure for greater strength overall. Permeating that shell you'll find no fewer than 27 vents to keep your melon cool during those scorcher mid-summer rides that make you wonder what the hell you're doing being out there. The Roc Loc 5 adjustment system teams up with Giro's Super Fit harness to make it easy to dial in the proper fit. Over your brow, you'll find the Snap-fit 2 removable and adjustable visor to keep the sun and some debris out of your face.

  • In-Mold construction
  • Roc Loc 5 fit adjustment
  • 27 vents
  • Snap-Fit 2 adjustable and removable visor

Tech Specs

Shell Material:
In-Mold polycarbonate
Impact Foam:
27 vents
Fit Adjustment:
Roc Loc 5
Recommended Use:
cross-country, trail, all-mountain
Manufacturer Warranty:
1 year

Size chart

Fuji Bicycles


Geometry Chart


Altamira LTD

Seat Tube


Effective Top Tube








Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop


Chainstay Length



44 44.0cm 51.5cm


36.3cm 72.1cm


72.0 deg 75.0 deg 6.9cm 40.5cm 97.1cm
47 47.0cm 53.0cm


37.0cm 74.1cm 13.0cm 72.5 deg 74.5 deg 6.9cm 40.5cm 97.7cm
50 50.0cm 54.5cm 54.0cm 37.0cm 76.0cm 14.0cm 73.0 deg 73.5 deg 6.9cm 40.5cm 97.6cm
53 53.0cm 56.0cm 56.0cm 37.9cm 78.3cm 16.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 98.6cm
55 55.0cm 57.5cm 58.0cm 38.9cm 80.1cm 18.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 100.1cm
58 58.0cm 59.0cm 60.1cm 39.7cm 82.1cm 20.0cm 74.0 deg 73.5 deg 6.9cm 40.5cm


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Here's what others have to say...


Dad approved!

  • Familiarity:I gave it as a gift but have feedback to share

I gave this to my dad as a birthday present and he absolutely loves it! He was wearing an old-school dated helmet and was overdue for an upgrade!

His head measures at 60 cm and the Large fits him perfect with room for adjustment if needed. He rocks this helmet around town commuting and occasionally on the mountain trails.

I purchased the blue so he can be seen from a distance and the color is very attractive, it is more matte than shiny.

Dad approved!