Fsa k force light sb25 carbon seatpostthe k force posts one piece carbon fibre 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 features forged alloy minimal top clamp mtc one piece continuous carbon fibre construction finish ud carbon finish sizes fits 7mm standard rails setback 25mm weight 210gbuy fsa components from chain reaction cycles the worlds largest online bike store