Add that custom touch to your STACYC®! STACYC Electric bikes are fast becoming one of the most popular electric balance bikes in the world. Nihilo has been working on several performance upgrades for your STACYC, as well as several custom products. The Nihilo Concepts Custom STACYC headset cap is made from 6061 anodized billet aluminum and fits all STACYC models. Available in multiple colors to match your custom color scheme. This part will also work for your bicycle / mountain bike.