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FSA OS99CSI UD Carbon Stem Black
The FSA OS99CSI UD Carbon Stem. The 99 csi is 3-D forged and CNC machined from AL2014 before a uni-directional carbon weave skin applied through the Carbon Structural Integration process. To further reduce weight the OS-99 uses a 4-bolt sculpted AL2014 alloy/carbon faceplate and titanium hardware. CSI is a process that permanently bonds carbon to alloy, to create a true hybrid product, with many of the benefits of aluminum and carbon. FSA OS99CSI UD Carbon Stem Features 3D forged and CNC machined from AL2014 UD carbon weave skin applied through CSI process 41mm fork clamp stack height Finish UD carbon finish Weight 126 grams (100mm)