FSA OS-99 CSI

  • The FSA OS-99 CSI is a 3D forged, CNC machined stem made from Aluminium 7070 with a carbon wrapping.
    CSI stands for carbon structure integration. The new designed front plate with 4-bolt clamp is also made from carbon wrapped AL 2014 while the bolts are Titanium.

    Weight: 122 g (110 mm)
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