Alpinetrek expert Ron
Alpinetrek expert Ron
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FSA - Vorbau OS-99 CSI 1 1/8'' +/-6° Ø 31.8 mm UD Carbon

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Material information & features
Recommended use:
Road bike
Aluminum; Carbon shell
41 x 90 - 130 mm
+/- 6°
126 g (100 mm)
31.8 mm handlebar clamp; 1 1/8" head tube clamp,
Item No.:
Product description
Lightweight, stable and pretty stiff to boot - the FSA OS-99 CSI Stem for your road bike! Not only was it 3D-forged and CNC-machined but it a carbon weave skin was applied as well. This combination makes the stem particularly stable and stiff, thereby reducing vibrations and increasing comfort. Of course, its really light too! The strategically placed bolts on the clamps serve to further improve the overall stability. Thus, the FSA OS-99 CSI is the perfect connector between the fork and handlebars, and that for professionals and amateurs alike!
Alpinetrek expert Ron

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