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5L crux hydration reservoir
Rubber Mounting Option
Further redesigns to the hood and drop shapes to accommodate the latest shift/brake levers help to create the new standard in ergonomics: the 3T SuperErgo
Large expandable mesh pocket fits most smartphones
*FSA OS99 Carbon Stem Black 100mm +/- 6 Parts-Cockpit & Saddle-Handlebars 5L crux hydration reservoirThe K Force OS 99 CSI stem is 3 D forged and CNC machined from AL2014. Then its combined with a carbon structure using our CSI (Carbon Structural Integration) technology. CSI is a process that permanently bonds carbon to alloy to create a true hybrid product, with many of the benefits of aluminum and carbon. The final details reduce the OS 99 stems weight by using a 4 bolt sculpted AL2014 alloy carbon faceplate and titanium hardware.
