2026 Specialized Sitero

Designed with Retül fit specialists, doctors, and engineers — the Sitero is the best-fitting saddle for aerodynamic time trial positions. Built for the extreme geometry of triathlon and time trial bikes, it delivers optimal comfort and support for long distance rides in an aerodynamic position. Hollow Cr-Mo rails and SWAT mounts keep weight down while enabling integrated storage.

• Aero Position Optimized: Designed from the ground up for TT/triathlon geometry — where saddle position is extreme.
• Wide Channel + Progressive Shape: Multiple width options with a progressive shape that supports the pelvis in aero position.
• Level 2 Padding: Medium density foam — bike feel with enough cushioning for long efforts in an aggressive position.
• 4-Way Stretch Cover: Unparalleled pelvic rami comfort — reduces pressure on the bones that bear your weight in the aero position.
• Hollow Cr-Mo Rails: Durable, lightweight steel — standard compatibility, reliable on TT bikes.
• SWAT Compatible: Aerodynamic integrated storage mounts — keep ride essentials tucked and out of the wind.

The Sitero is not a Body Geometry saddle — it's a purpose-built TT/triathlon saddle designed for the specific demands of aerodynamic positioning. If you spend hours in the aerobars, this is the saddle built for that position.