Not every triathlete wants a rear-mounted water bottle behind the saddle. If you're running a between-the-arms hydration setup or simply prefer the clean look of an uncluttered seatpost, Cervelo's SP23 Saddle Clamp Slug fills the mounting hole that would otherwise sit open and exposed. The slug plugs into the seatpost saddle clamp area on P-Series and P5 bikes, maintaining the aerodynamic profile those frames were designed around.

The mounting point for Cervelo's seatpost water bottle mount leaves a visible opening when that accessory isn't installed. Beyond aesthetics, an open hole creates unnecessary drag and invites road grime into areas you'd rather keep clean. Water, sand, and debris kicked up from the rear wheel have a direct path into your seatpost assembly without this plug in place. The slug snaps into position and restores the smooth surface the seatpost was engineered to present to the wind, keeping the area sealed and maintaining the integrated look Cervelo designed into these frames.

Compatibility covers Cervelo's triathlon and time trial lineup: the P5X, P3X, PX-Series, P5 Disc, and P-Series models from 2019 forward. The slug works with both SP21 and SP23 seatpost variants, so whether you're running the stock post or swapped in a different height option, you're covered. If you've bought a used P-Series bike that came without this piece, or you removed the bottle mount and now want to close up the hole, this is the part you need.... Read More