Cervelo Carbon Saddle Rail Clamp for Cervelo S and P series.
These clamps will work for Cervelo S5, S3 and S2 seat posts up to 2015. Will also work for older P3 and P2 seat posts to 2013.
Designed to work with carbon rails.
All you need to do is to replace the Cervelo stock ones with these new pieces. Bolts are included.
These are original Cervelo parts.