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Giro Quarter

Giro Quarter
  • Color: Matte Black
  • Color: Matte Chalk
  • Color: Matte Portaro Grey
  • Color: Matte Warm Black
Please select options


The Quarter is one of the lowest-profile helmets we've ever made, and it's also the lightest we've made with an ABS shell. The essentials are here—an EPS liner for impact management, a tough outer shell, riveted webbing anchors, and plush, sweat absorbent pads that are easy to swap for dialing in the fit. Another standout feature—the polyurethane coating—helps to protect the EPS liner from daily wear and tear. Plus it's available in a bunch of great colors and three Super Fit sizes.

Adult Super Fit SizeCircumference
Small 51 - 55 cm
Medium 55 - 59 cm
Large 59 - 63 cm

Note: We recommend you try helmets on before buying. Make sure the helmet fits with a little room when the fit system is loose, and sits low enough to protect your forehead without hindering your vision. Once you’ve got the right size, you can adjust the fit.

Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older


Part Numbers

Option UPC MPN Store SKU
Matte Black / Small 768686554094 7055601 QUA18806546S
Matte Black / Medium 768686554100 7055602 QUA18998323M
Matte Black / Large 768686554117 7055603 QUA18264852L
Matte Warm Black / Small 768686376719 7129569 GIR24858471S
Matte Warm Black / Medium 768686376726 7129570 GIR2486777M
Matte Warm Black / Large 768686376733 7129571 GIR24269643L
Matte Chalk / Small 768686376627 7129542 GIR20362224S
Matte Chalk / Medium 768686376634 7129543 GIR20220228M
Matte Chalk / Large 768686376641 7129544 GIR20827551L
Matte Portaro Grey / Small 768686376658 7129551 GIR23229952S
Matte Portaro Grey / Medium 768686376665 7129552 GIR23550478M
Matte Portaro Grey / Large 768686376672 7129553 GIR2327695L