Losing the internal seatpost wedge on an integrated clamp system leaves you with a post that slips or won't hold torque, and it's not the kind of part you can improvise a fix for. This is the genuine Pinarello replacement wedge, part number PSSC0007AM, machined to match the internal clamping geometry of the X and F series framesets. It restores the holding force the frame was designed around without you having to overtighten and risk the carbon.

The wedge is a precision-machined aluminum body that works as an internal expansion mechanism. As you tighten the clamp bolt, the wedge expands against the seatpost and the inside of the frame's seat collar, spreading the clamping load rather than pinching a single point. That's how these integrated systems keep a clean external look while still locking the post in place, and it's why using the correct wedge matters for both holding power and frame safety.

Primary fitment is the Pinarello X3 and X1 framesets, but the same wedge also covers the broader X and F series, including the X9, X7, and X5 as well as the F9, F7, and F5 variants. If you're replacing a lost or damaged original, this is the direct swap that keeps everything to spec.