Check out our complete selection of KS dropper seat posts and receive FREE domestic shipping with your purchase. Transform your riding experience with the addition of a KS LEV dropper post. KS is known for their superb reliability in all weather conditions. Be sure to check out the popular addition of the Southpaw lever, perfect for those riders running a 1X drivetrain. Here you will also find replacement cartridges and small parts you may need for your KS post.