
FSA OS-99 CSI Carbon Stem, 31.8 x +/-6 x 90 and 80 mm - Red, ST-OS-98CSI/UD {MY2014}
3D-forged and CNC-machined from AL2014, then permanently bonded with a UD carbon wrap, the FSA K-Force OS-99 CSI stem is a true hybrid, offering many benefits of both aluminum and carbon.
3D-forged and CNC-machined from AL2014, then permanently bonded with a UD carbon wrap, the FSA K-Force OS-99 CSI stem is a true hybrid, offering many benefits of both aluminum and carbon.
Original: $159.99
-65%$159.99
$56.00Description
3D-forged and CNC-machined from AL2014, then permanently bonded with a UD carbon wrap, the FSA K-Force OS-99 CSI stem is a true hybrid, offering many benefits of both aluminum and carbon.




















