Race face sixc i beam carbon seatpostthe lightest ever dh strength post that race face have created and perfect addition to your sixc group set featuresuse xcamdhsize 30 9 31 6weight 190g 31 6lenght 350mm tube features manufactured with a leading edge composite material which allows race face to reach their high strength requirements at an impressively low weight their engineered carbon layup tube offers outstanding fatigue impact strength this is their lightest ever dh strength p