FSA is proud to launch the brand new KFX range, bringing a new selection of lightweight and stiff components for mountain bikes. The FSA KFX SB25 seatpost’s one-piece carbon fiber shaft and head are topped off with a forged alloy Minimal Top Clamp, giving a full range of adjustment and secure saddle mounting at a very low weight. There’s also the option of mounting a Shimano Di2 battery in the bottom of the post.