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FSA OS-99 CSI stem, Ø-31.8 mm

199 €
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Delivery method on Friday 23.01.2026
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FSA OS-99 CSI stem

The FSA OS-99 CSI stem is made of AL2014 alloy with a UD Carbon top layer applied with CSI technology.
Product details
Colour black
Stem length 80mm, 90mm, 100mm, 110mm, 120mm
Handlebar diameter 31.8 mm
Diameter for handlebars 31,8 mm
Diameter for column 28.6 mm
Technology CNC, 3D Forged, UD Carbon
Angle +/- 6°
Material AL2014 / UD Carbon
Weight 126g (100mm)
product ID 33858
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FSA
Stems FSA
FSA (Full Speed Ahead) is a global brand with a very wide range of products for all cycling disciplines. In its assortment, it even has its own road set, under the subsidiary brand Vision it mainly offers road wheels, including specialities for time trial and triathlon.
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