FSA OS-99 CSI Carbon Stem - 31.8 Bike Equipment at Road Runner Sports
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FSA OS-99 CSI Carbon Stem - 31.8 Bike Equipment

FSA OS-99 CSI Carbon Stem - 31.8

Item #NYT930
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Product Description:

Carbon Structural Integration (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 OS-99 is 3-D forged and CNC machined from AL7050 before a 3K carbon weave skin applied through CSI process. To further reduce weight the OS-99 uses a 4 bolt sculpted AL2014 Alloy/Carbon faceplate and titanium hardware.


  • 3D Forged and CNC machined from AL2014

  • 4 bolt sculpted AL2014 Alloy/Carbon faceplate

  • Titanium Hardware

  • Sizes:

  • 31.8mm handlebar clamp

  • 41mm fork clamp stack height

  • Finish:

  • 3K Carbon weave

  • Flip flop color graphics

  • Weight

  • 122 g (110mm)

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