Specialized S-Works Tarmac SL6 380mm 20-Degree Setback Seatpost

Specialized S-Works Tarmac SL6 380mm 20-Degree Setback Seatpost The S-Works Tarmac SL6 380mm 20-Degree Setback Seatpost from Specialized fits models from their Tarmac range from 2019 and 2020. The FACT carbon construction is strong; aerodynamic and lightweight yet still compliant enough to take the unpleasant vibrations out of poor road surfaces thanks to its D-shape. The cylindrical aluminium head assembly allows adjustment of tilt and fore/aft position with a single bolt.