The XLab Delta Sonic XL is the only single bottle carrier compatible with 10mm horizontal hole seatposts - and 0.8" (2cm) longer than the Delta Sonic.
Working closely with Cervlo and their wind tunnel testing results, X-Lab developed an aerodynamic single rear system specific to Ritchey clamp seat posts with a 10mm horizontal rear hole.
This strong and sturdy mount eliminates rear carrier sway and the included Gorilla Cage has a tight 7lb grip on bottles, eliminating unexpected launches. It's very adjustable, with up to 1.25" of adjustment, ensuring the carrier sits close to the saddle.
X-Lab has found these bikes to be compatible with the Delta Sonic: Cervelo P5 & 2013 P3, Scott Plasma, Kestrel 4000, Fuji D6 & Norcom, BH Aero
Customers please note: If your saddle is in the rearward position, you may want to look at the Delta Sonic XL instead.
Features
Aerodynamic design - The Delta Sonic allows the bottle to be close to the saddle, hiding in the rider's draft and provides clean air flow.
Reliable & customizable - The Delta Sonic fits snug into the seat post, providing a sturdy non-sway bottle mount, for fast and safe access to your bottle.
The Delta Sonic rod can slide along the seat post for the best customized fit for you - X-Lab recommends a 1" insertion minimum into the seatpost.
Compatibility - Compatible with many major time trial/triathlon bikes.
Specifications
Includes Delta Sonic XL Rod, Gorilla Cage and all hardware and installation instructions
Material: Stainless steel (rod), Carbon fiber (cage)
Weight: 107g (rod), 49g (cage) = 156g total.