FSA K-Force Light seatpost review

One-piece carbon seatpost

Our rating 
4.0 out of 5 star rating 4.0
GBP £119.99 RRP | USD $203.52
FSA K-Force Light

Our review

Light, easy-to-adjust post in a range of sizes – but not cheap
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The 2009 K-Force Light seatpost is a one-piece carbon monocoque design with a two-bolt chromoly/stainless steel head that makes fine-tuning the saddle angle a cinch. 


Once in place, it does exactly what you want a good seatpost to do by holding everything firmly without any complaint or flex. The K-Force is available in 27.2, 30.9 and 31.6mm diameters, and with a setback (distance from the centre of the post to the middle of the clamp) of either 0, 25 or 32mm. 


All are 350mm long. Our 31.6mm model with 32mm of setback weighed a reasonably light 251g – all other versions are slightly lighter.

Product Specifications


Name K-Force Lite Seatpost
Brand FSA

Weight (g) 251
Length (mm) 350
Material Carbon Fibre
Seatpost/Seat Pin Type Onepiece Construction
Lengths Available 350mm
Diameters Available 32.4mm 27.2mm 31.6mm