Giro Sport Design

Giro Sport Design Phase Cycling Helmet


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Giro Sport Design Phase Cycling Helmet

When heading out to tackle some single track, make sure to protect your dome in the Giro Phase Cycling Helmet. Durable, ventilated and equipped with the Giro ACU Dial 2 Fit system, the Phase offers a superior fit and all-day comfort.

  • In-mold technology construction
  • ACU Dial 2 Fit System
  • Super fit engineering
  • Wind Tunnel Ventilation system
  • Removable visor
  • 27 vents
  • Sizing: 20-21.75" (Small), 21.75" – 23.25" (Medium), 23.25"-24.75" (Large)

Purchase the Giro Sport Design Phase Cycling Helmet from All order totals over $45 qualify for free ground shipping.

5 Star Rating


5 Stars BullFlag - August 20 2011

Phase Cycling Helmet
the Giro Phase Cycling Helmet is durable and ventilated. The Phase offers a superior fit and all-day comfort. As a mountain biker I can say that the helmet is very ventilated, light weight and fit well with the ACU dial system.

5 Stars aklc - April 30 2011

Great lid for the price. Good fit, good looks, good quality. Maybe not the most comfortable for megarides, but for an afternoon on the trail it more than gets the job done.

5 Stars Sean Lewis - March 8 2010

Typical Giro!
This helmet looks and feels great with or without the detachable visor, fits true to size and has a large range of adjustment with Giro's retention system. Plus, I got a great deal on it thanks to altrec WITH free shipping. Last but not least, the helmet arrived at my door unscathed within 2 days of ordering!

5 Stars Cameron Smith - November 10 2009

Good Helmet
This helmet was a great fit and the ability to adjust made it even better. The comfort was good. The only drawback was that it seemed bulky compared with other helmets.

5 Stars Gene - May 11 2009

This is the one to have
Great fit, great quality and super lightweight. Fast delivery from Altrec always helps!

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