The Jagwire Pro Telescopic Seatpost Installation Kit provides maximum performance and control of a telescopic seatpost. A special 0.8 mm polished cable connects the control lever to the seatpost to ensure smooth movement. The 3.0 mm FLEX-SL outer bowden is more flexible than conventional 4.0 mm bowdens, which simplifies installation and ensures smoother routing. Supplied with end caps for easy and quick installation.