The Cervélo SP21/SP23 Saddle Clamp Slug is a simple yet essential accessory designed to maintain the clean, aerodynamic lines of your bike when certain mounting options are not required. Specifically crafted as a saddle clamp blanking plug, this component ensures that your seatpost remains secure and streamlined in appearance, even when you’re not utilizing the additional bottle or accessory mounts.

Compatible with a wide range of Cervélo’s high-performance models—including the P5X, P3X, PX-Series, P5 Disc, and P-Series—this plug is purpose-built for riders who demand both functionality and minimalism in their setup. Its role is to act as a seatpost plug when the integrated water bottle aero mount is not in use, preventing unnecessary gaps and maintaining aerodynamic efficiency.

Lightweight and durable, the SP21/SP23 Saddle Clamp Slug installs easily and offers a factory-fresh finish, blending seamlessly with your frame’s design. Whether you’re fine-tuning your triathlon race-day build or simplifying your training bike for everyday rides, this small but vital component helps preserve the performance-focused details Cervélo bikes are known for. A must-have for owners seeking versatility without sacrificing the precision and aesthetics of their aerodynamic machines.