Thomson External Cable Dropper Post 125mm is the ideal solution for frames without internal routing, whether you're into MTB, Gravel, or a retro build.- 125mm travel- Remote actuator and cable kit included- Cartridge-based system for ease of usePair this dropper post with Thomson seat post clamp, X4 stem, and bars for a fully coordinated cockpit setup!The new shifter-oriented remote lever ensures easy operation, while the cartridge-based system is built to have the longest service life possible. If repairs are needed, they are fast, affordable, and straightforward. Each part of the External Dropper is meticulously chosen for the highest grade quality.