The KFX Stem is 3D forged and CNC-machined from AL2014 alloy that is then combined with a carbon structure using FSA CSI (Carbon Structural Integration) technologyCSI is a process that permanently bonds carbon to alloy to create a true hybrid product, with many of the benefits of aluminum and carbon35mm clamp stack heightTitanium hardwareRoad1-1/8`8031.8-12°BlackAL2014/CarbonUPC/EAN/GTIN: 840031066442