Pinarello has been using an aero stem and headset design on many Gan, F8, and F10 complete bikes. The design is somewhat integrated with the top cap and spacers aligning with the stem for an exceptionally clean aero effect over this oft-ignored junction. Pinarello's house component brand, MOst, has delivered this Tiger Ultra Aero 3K Di2 Stem, which not only meets the aero shape requirement, but also allows for direct Shimano Di2 e-Tube wiring with Di2 compatible handlebars, such as the Most Jaguar XC Aero 3K. The stem itself is a hybrid design with a forged and machined base design, which is then wrapped with a matte effect 3K carbon. It looks fantastic and works seamlessly with the Ultra Aero 3K handlebar on any of the aero headtube Pinarello's.

Set with an 82°, minus 8 angle the Tiger Ultra Aero 3k Di2 Stem works with standard 1⅛ steerer tubes and 31.8mm diameter handlebars. A specific aero top cap and spacers are required for fitment, so generally you will only see this design on the Pinarello bikes. The face plate is a standard 4-bolt design, with titanium Torx bolts used. The steerer clamp system is an internal wedge design, fastened by two rear facing internal fitment ("grub") screws. Please follow all printed torque specifications.