KS LEV Si Mast End

This component acts as the mechanical interface at the base of your dropper post. It translates the tension from your remote cable into the movement required to open the internal piston, allowing the seatpost to adjust its height.

No, this specific mast end is designed exclusively for the KS LEV Si series. It will not fit other KS models like the standard LEV, LEV Integra, or ETen series.

You likely need a replacement if your seatpost has stopped actuating despite having proper cable tension, or if the mechanism at the base of the post feels loose, damaged, or physically obstructed. It is a common wear item when the internal actuation interface becomes worn out.

Replacing the mast end requires basic mechanical knowledge and standard bike tools. You will need to remove the post from the frame and disconnect the cable, so ensure you are comfortable performing routine dropper post maintenance before starting.