evo.com | Specialized Saddles > Let the Specialized S-Works Power Carbon Saddle boost your ride with a high-performance design for men and women. The FACT carbon shell and rails are sturdy and lightweight and the wide, elongated channel and optimized sit bone support provide enduring comfort on all-day rides. Light PU Padding Level 1 padding. SWAT(TM)-Compatible Mounts Molded Into the Saddle Base Compatibility Oversized 7x9mm carbon rails are not compatible with seatposts equipped with side-load clamp mechanisms for 7mm round rails. FACT Carbon Fiber Shell Oversized FACT Carbon Rails | Specialized S-Works Power Saddle 2025 - 143mm in Black