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NOTE* This stem is a return that has been installed and used. There are a few light scratches on the bottom of the stem. This sale does not include any original packaging. This item is fully functional and ready for the road!
FSA has taken their lightweight aluminum OS-99 and wrapped it in a beautiful carbon 3k weave. The resulting carbon stem is not all show with very little go. What FSA ends up with is the OS-99 CSI. A stem that is stiffer and more durable with only a slight weight penalty. Not to imply that the aluminum OS-99 is a noodle, but adding the wrap gives the stem a different character. This one works well for the powerful rider that wants a very stiff front end, or for that rider who appreciates the look of carbon in all the right places.