XLAB SONIC WING

Cervélo™ Specific Alloy Rear Hydration Carrier. You know those mysterious two holes in a Cervélo™ seatpost? Well, this Carrier will fit in there, a nice tight fit. Is compatible with the Cervélo™ P2Cs, P3Cs and P4Cs. Consider the CARBON SONIC made of Carbon Fiber for a lighter version.

When installed in the high position, air flows cleanly around the aero seat post. The narrow 5/8" SONIC WING chassis has an open back allowing air to exit. This can save 13 seconds per 40 kilometers when in the high position.

Has 30 different positions available, so that you can have a custom fit position that is both comfortable and aerodynamic. Can be inverted for a lower position on the saddle, or keep it upright for a low drag higher position. 3 different carrier angles and 5 different bottle angles for each position.