this top cap with integrated 5mm spacer is specifically designed for carbon steering tubes

If you love gravity type riding and are looking to upgrade

13mm and 15mm

1/8 steerer tubes

Giro Quarter Helmet - L - Matte Black - AS-NZS 2063-2008 Standard Do Not Ship Internationally this top cap with integratedGiro's lowest profile helmet, ever! The Quarter is optimized for street, skate park, and dirt jump riding. Capable of taking multiple impacts, the external shell is abrasion resistant, so no matter what you hit your head on, this helmet will keep functioning and keep looking good while doing so. Multiple sized, replaceable, sweat absorbent foam pads help keep your head cool and provide that perfect fit.