OS-99 CSI Stem

The OS-99 CSI stem combines the strengths of both aluminium and carbon fibre resulting in a stiffer stem that has improved vibration damping properties. Performing as a composite material in its own right the OS-99 CSI stem benefits from a dramaitic reduction of typical fatigue phenomenon such as Stress Corrosion Cracking and Creep Propagation Cracking giving the stem unpresidented longevity.

Features:

• 3D forged, CNC machined from AL7050 and crabon wrapped
• 4 bolt sculpted SL faceplate
• Titanium hardware
• Ø31.8mm handlebar clamp diameter
• 35mm fork clamp stack height
• Gloss carbon 3K weave finish
• Flip-flop colour graphics

Weight 121g