FSA K-Force OS-99 CSI 31.8 Clamp Stem - Black

The K-Force OS-99 CSI stem is 3-D forged and CNC machined from AL2014. Then it’s combined with a carbon structure using our 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 aluminum and carbon. The final details reduce the OS-99 stems weight by using a 4-bolt sculpted AL2014 alloy/carbon faceplate and titanium hardware.

• 3D forged and CNC machined from AL2014


• Carbon Structural Integration Technology


• 41mm fork clamp stack height


• UD Carbon Finish


• 41mm Clamp Stack Height


• Weight 125 grams (100mm)

All orders are processed within 2-3 business days. Orders are not shipped or delivered on weekends or holidays.

If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.

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