Giro Aeon
  • Color: Red/Black
  • Color: Black/Charcoal
  • Color: White/Silver
  • Color: Matte Titanium/Silver
  • Color: Black/Turquoise
  • Color: Blue/Black
  • Color: Matte Black/Yellow LIVESTRONG
  • Color: Matte Black/Red Explosion
  • Color: Highlight Yellow/Black
Please select options


Giro's Aeon is the pinnacle of lightness and comfort and a great choice for your road riding. This trick lid dropped 28% off the weight of its predecessor, while actually adding features. For durability it boasts Giro's In-mold polycarbonate shell with a reinforced thermoformed Giro SL Roll Cage, and for comfort there are 24 vents with Giro's Wind Tunnel technology to draw the air through. Complementing the ventilation is Giro's Roc Loc 5 retention system for a custom fit and feel, plus Giro's antimicrobial X-Static padding for ride all-day comfort.

- Small = 51-55cm
- Medium = 55-59cm
- Large = 59-63cm

Giro's Roc Loc 5.

A) Micro Dial - A ratcheting dial that’s simply twisted to tighten and loosen the fit.

B) Three-Position Vertical Fit - Lets you raise and lower the Roc Loc system to the perfect position.

C) Ergonomic Arms - Minimal shape fits comfortably and accommodates eyewear.

D) Dual Pods – Supportive, minimal panels that cradle your head for the utmost in comfort and safety.

E) Strap Management - The straps (not shown) are woven through the fit system to always remain in the right place.



Aeon's Tour of Flanders release

Wind Tunnel technology

Watch a video of Levi Leipheimer talking about Giro’s Roc Loc 5 fit system.

Part Numbers

Option UPC MPN
Blue/Black / Small 361857338808 2027099
Blue/Black / Medium 361857338815 2027100
Blue/Black / Large 361857338822 2027101
Matte Black/Yellow LIVESTRONG / Small 361857348623 2030467
Matte Black/Yellow LIVESTRONG / Medium 361857348630 2030468
Matte Black/Yellow LIVESTRONG / Large 361857348647 2030469
Matte Black/Red Explosion / Small 361857348654 2030470
Red/Black / Small 361857338778 2027096
Red/Black / Medium 361857338785 2027097
Red/Black / Large 361857338792 2027098
Matte Black/Red Explosion / Medium 361857348661 2030471
Matte Black/Red Explosion / Large 361857348678 2030472


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by PowerReviews

(based on 1 reviews)


of respondents would recommend this to a friend.


  • Convenient back-of-head adjustment 
  • Durable 
  • Good ventilation 
  • Lightweight 
  • Nice fit system/pads 

Best Uses

  • Road cycling 


Reviewed by 1 customers

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Takes a licking, but keeps on ticking


from Houston, TX

About Me Avid Cyclist


  • Convenient back-of-head adjustment
  • Nice fit system/pads
  • Good ventilation
  • Durable
  • Lightweight


    Best Uses

    • Road cycling


    After a recent cycling mishap left me with two fractured ribs, pneumothorax, and three days in the hospital, I count myself extremely fortunate by not incurring a serious head injury. While my Giro Aeon suffered three breaks in the shell, it remained intact and absorbed the impact in magnificent fashion. I am heading to [...] today to purchase a replacement.

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