Pinarello specifes an aero headset and stem system on several frame designs. As such the upper bearing retainers and spacers are designed to perfectly match the aero shape and all feature an alignment pin integrated into each piece to ensure both the aerodynamic effect and proper aesthetic for these framesets

Perfectly machined with parallel faces and the aero design from 1K weave carbon fiber, the Most Aero Headset Spacer's are available in two heights: 5mm and 10mm. When used with one of the size options available in the upper bearing retainer cap, you can optimize you stack height to meet your preferences and/or bike fit specifications. The matte carbon finish complements the frame and upper bearing retainer. These spacers are only available from Pinarello, so you know we are carrying genuine OEM parts.