FSA K-Force OS-99 CSI stem is forged in 3-D and CNC machined from Aluminium 2014. It is then combined with a carbon structure using CSI (Carbon Structural Integration) technology. CSI is a process that permanently bonds carbon to alloy to create a true hybrid product, with many of the benefits of aluminium and carbon. Final details reduce the weight of the OS-99 stems by using a 4-bolt sculpted Aluminium 2014 carbon alloy plate and titanium hardware.
Features:
– Forged in 3D and machined CNC from Aluminium 2014
– Structural integration of carbon
– Fork clamp stacking height 41 mm
– Carbon Finish UD
– Clamp stacking height 41 mm
– Weight: 125 g






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