Frame-specific hardware exists because proprietary seatpost profiles don't play nice with universal clamps, and the Pinarello Grevil F Seatpost Wedge is the part that keeps your saddle height locked on the Grevil F gravel platform. This is a multi-part aluminum internal clamp mechanism machined to match the aero-profile seatpost shape and the integrated seat tube pocket on the Grevil F frameset. Running the correct wedge is the difference between a seatpost that stays put and one that slips or damages the frame, and using anything other than the factory part can void your frame warranty.

The wedge secures the seatpost internally rather than with an external collar, which is how Pinarello keeps the seat cluster clean and the seatpost profile aerodynamic. Because the shape is proprietary to the Grevil F, this wedge is not interchangeable with other Pinarello models. If you're chasing a lost or damaged wedge, matching the part number is the only way to be sure you're getting hardware that fits your exact frame.

This part is specific to the Grevil F gravel series. It does not fit the Dogma F series, which uses PSSC0003AM or PSSC0012AM, and it does not fit the standard F or X road series, which use PSSC0008AM. Confirm your frame is a Grevil F before ordering, since the internal pockets differ between platforms and the wrong wedge will not clamp correctly.