I am selling a top-of-the-range original FSA OS-99 CSI stem, in excellent aesthetic and structural condition. A very lightweight and ultra-stiff component, ideal for road bikes or MTBs. Thanks to CSI (Carbon Structural Integration) technology, the 3D forged aluminum inner core is fused with a structural carbon fiber outer coating, ensuring the perfect compromise between responsiveness and vibration absorption.

Technical specifications:
Material: AL7050 aluminum with UD carbon structural finish
Hardware: Original titanium bolts
Handlebar clamp diameter: 31.8 mm
Steerer tube diameter (fork): 1-...